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Finding the Fourth Proportional to 388,227.89, 535,646.72 and 250,348.47

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Solution

The fourth proportional to 388,227.89, 535,646.72 and 250,348.47 is: 345,411.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,227.89 : 535,646.72 = 250,348.47 : x
  2. Step 2: Convert to fraction form
    388,227.89/535,646.72 = 250,348.47/x
  3. Step 3: Cross multiply
    388,227.89x = 535,646.72 × 250,348.47
  4. Step 4: Simplify right side
    388,227.89x = 134,098,336,812.52
  5. Step 5: Solve for x
    x = 134,098,336,812.52/388,227.89
  6. Step 6: Final answer
    x = 345,411.39

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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.