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Finding the Fourth Proportional to 307,527.18, 424,387.11 and 173,391.18

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Solution

The fourth proportional to 307,527.18, 424,387.11 and 173,391.18 is: 239,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,527.18 : 424,387.11 = 173,391.18 : x
  2. Step 2: Convert to fraction form
    307,527.18/424,387.11 = 173,391.18/x
  3. Step 3: Cross multiply
    307,527.18x = 424,387.11 × 173,391.18
  4. Step 4: Simplify right side
    307,527.18x = 73,584,981,779.69
  5. Step 5: Solve for x
    x = 73,584,981,779.69/307,527.18
  6. Step 6: Final answer
    x = 239,279.60

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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.