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Finding the Fourth Proportional to 388,092.13, 535,423.48 and 387,493.61

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Solution

The fourth proportional to 388,092.13, 535,423.48 and 387,493.61 is: 534,597.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,092.13 : 535,423.48 = 387,493.61 : x
  2. Step 2: Convert to fraction form
    388,092.13/535,423.48 = 387,493.61/x
  3. Step 3: Cross multiply
    388,092.13x = 535,423.48 × 387,493.61
  4. Step 4: Simplify right side
    388,092.13x = 207,473,175,677.76
  5. Step 5: Solve for x
    x = 207,473,175,677.76/388,092.13
  6. Step 6: Final answer
    x = 534,597.74

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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.