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Finding the Fourth Proportional to 316,281.29, 474,421.96 and 91,641.88

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Solution

The fourth proportional to 316,281.29, 474,421.96 and 91,641.88 is: 137,462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,281.29 : 474,421.96 = 91,641.88 : x
  2. Step 2: Convert to fraction form
    316,281.29/474,421.96 = 91,641.88/x
  3. Step 3: Cross multiply
    316,281.29x = 474,421.96 × 91,641.88
  4. Step 4: Simplify right side
    316,281.29x = 43,476,921,035.26
  5. Step 5: Solve for x
    x = 43,476,921,035.26/316,281.29
  6. Step 6: Final answer
    x = 137,462.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.