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Finding the Fourth Proportional to 316,686.33, 437,034.35 and 173,445.12

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Solution

The fourth proportional to 316,686.33, 437,034.35 and 173,445.12 is: 239,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,686.33 : 437,034.35 = 173,445.12 : x
  2. Step 2: Convert to fraction form
    316,686.33/437,034.35 = 173,445.12/x
  3. Step 3: Cross multiply
    316,686.33x = 437,034.35 × 173,445.12
  4. Step 4: Simplify right side
    316,686.33x = 75,801,475,713.48
  5. Step 5: Solve for x
    x = 75,801,475,713.48/316,686.33
  6. Step 6: Final answer
    x = 239,358.22

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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.