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Finding the Fourth Proportional to 316,686.73, 437,011.32 and 173,419.13

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Solution

The fourth proportional to 316,686.73, 437,011.32 and 173,419.13 is: 239,309.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,686.73 : 437,011.32 = 173,419.13 : x
  2. Step 2: Convert to fraction form
    316,686.73/437,011.32 = 173,419.13/x
  3. Step 3: Cross multiply
    316,686.73x = 437,011.32 × 173,419.13
  4. Step 4: Simplify right side
    316,686.73x = 75,786,122,914.55
  5. Step 5: Solve for x
    x = 75,786,122,914.55/316,686.73
  6. Step 6: Final answer
    x = 239,309.44

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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.