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Finding the Fourth Proportional to 388,220.14, 535,605.13 and 224,787.44

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Solution

The fourth proportional to 388,220.14, 535,605.13 and 224,787.44 is: 310,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,220.14 : 535,605.13 = 224,787.44 : x
  2. Step 2: Convert to fraction form
    388,220.14/535,605.13 = 224,787.44/x
  3. Step 3: Cross multiply
    388,220.14x = 535,605.13 × 224,787.44
  4. Step 4: Simplify right side
    388,220.14x = 120,397,308,275.78
  5. Step 5: Solve for x
    x = 120,397,308,275.78/388,220.14
  6. Step 6: Final answer
    x = 310,126.38

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1.5x scale

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.