Home / 311,865,163,611.42-430,376,452,725.45-172,818,767,945.47

Finding the Fourth Proportional to 311,865,163,611.42, 430,376,452,725.45 and 172,818,767,945.47

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Solution

The fourth proportional to 311,865,163,611.42, 430,376,452,725.45 and 172,818,767,945.47 is: 238,491,300,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,865,163,611.42 : 430,376,452,725.45 = 172,818,767,945.47 : x
  2. Step 2: Convert to fraction form
    311,865,163,611.42/430,376,452,725.45 = 172,818,767,945.47/x
  3. Step 3: Cross multiply
    311,865,163,611.42x = 430,376,452,725.45 × 172,818,767,945.47
  4. Step 4: Simplify right side
    311,865,163,611.42x = 74,377,128,312,754,086,608,896
  5. Step 5: Solve for x
    x = 74,377,128,312,754,086,608,896/311,865,163,611.42
  6. Step 6: Final answer
    x = 238,491,300,058.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.