Home / 311,865,163,597.81-430,376,452,706.61-172,818,767,931.85

Finding the Fourth Proportional to 311,865,163,597.81, 430,376,452,706.61 and 172,818,767,931.85

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Solution

The fourth proportional to 311,865,163,597.81, 430,376,452,706.61 and 172,818,767,931.85 is: 238,491,300,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,865,163,597.81 : 430,376,452,706.61 = 172,818,767,931.85 : x
  2. Step 2: Convert to fraction form
    311,865,163,597.81/430,376,452,706.61 = 172,818,767,931.85/x
  3. Step 3: Cross multiply
    311,865,163,597.81x = 430,376,452,706.61 × 172,818,767,931.85
  4. Step 4: Simplify right side
    311,865,163,597.81x = 74,377,128,303,636,449,853,440
  5. Step 5: Solve for x
    x = 74,377,128,303,636,449,853,440/311,865,163,597.81
  6. Step 6: Final answer
    x = 238,491,300,040.02

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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.