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Finding the Fourth Proportional to 354,478.40, 531,714.87 and 88,237.10

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Solution

The fourth proportional to 354,478.40, 531,714.87 and 88,237.10 is: 132,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,478.40 : 531,714.87 = 88,237.10 : x
  2. Step 2: Convert to fraction form
    354,478.40/531,714.87 = 88,237.10/x
  3. Step 3: Cross multiply
    354,478.40x = 531,714.87 × 88,237.10
  4. Step 4: Simplify right side
    354,478.40x = 46,916,978,155.68
  5. Step 5: Solve for x
    x = 46,916,978,155.68/354,478.40
  6. Step 6: Final answer
    x = 132,354.97

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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.