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Finding the Fourth Proportional to 356,513, 534,770.71 and 90,273.39

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Solution

The fourth proportional to 356,513, 534,770.71 and 90,273.39 is: 135,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,513 : 534,770.71 = 90,273.39 : x
  2. Step 2: Convert to fraction form
    356,513/534,770.71 = 90,273.39/x
  3. Step 3: Cross multiply
    356,513x = 534,770.71 × 90,273.39
  4. Step 4: Simplify right side
    356,513x = 48,275,564,864.41
  5. Step 5: Solve for x
    x = 48,275,564,864.41/356,513
  6. Step 6: Final answer
    x = 135,410.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.