Home / 388,306,611.90-535,859,587.04-212,094,560.61

Finding the Fourth Proportional to 388,306,611.90, 535,859,587.04 and 212,094,560.61

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Solution

The fourth proportional to 388,306,611.90, 535,859,587.04 and 212,094,560.61 is: 292,688,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,611.90 : 535,859,587.04 = 212,094,560.61 : x
  2. Step 2: Convert to fraction form
    388,306,611.90/535,859,587.04 = 212,094,560.61/x
  3. Step 3: Cross multiply
    388,306,611.90x = 535,859,587.04 × 212,094,560.61
  4. Step 4: Simplify right side
    388,306,611.90x = 113,652,903,660,844,384
  5. Step 5: Solve for x
    x = 113,652,903,660,844,384/388,306,611.90
  6. Step 6: Final answer
    x = 292,688,561.51

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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.