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Finding the Fourth Proportional to 317,431.50, 438,060.92 and 174,204.87

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Solution

The fourth proportional to 317,431.50, 438,060.92 and 174,204.87 is: 240,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,431.50 : 438,060.92 = 174,204.87 : x
  2. Step 2: Convert to fraction form
    317,431.50/438,060.92 = 174,204.87/x
  3. Step 3: Cross multiply
    317,431.50x = 438,060.92 × 174,204.87
  4. Step 4: Simplify right side
    317,431.50x = 76,312,345,620.68
  5. Step 5: Solve for x
    x = 76,312,345,620.68/317,431.50
  6. Step 6: Final answer
    x = 240,405.71

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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.