Home / 312,397.20-431,098.92-176,436.72

Finding the Fourth Proportional to 312,397.20, 431,098.92 and 176,436.72

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Solution

The fourth proportional to 312,397.20, 431,098.92 and 176,436.72 is: 243,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,397.20 : 431,098.92 = 176,436.72 : x
  2. Step 2: Convert to fraction form
    312,397.20/431,098.92 = 176,436.72/x
  3. Step 3: Cross multiply
    312,397.20x = 431,098.92 × 176,436.72
  4. Step 4: Simplify right side
    312,397.20x = 76,061,679,440.34
  5. Step 5: Solve for x
    x = 76,061,679,440.34/312,397.20
  6. Step 6: Final answer
    x = 243,477.47

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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.