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Finding the Fourth Proportional to 310,318.31, 465,476.64 and 82,613.93

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Solution

The fourth proportional to 310,318.31, 465,476.64 and 82,613.93 is: 123,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,318.31 : 465,476.64 = 82,613.93 : x
  2. Step 2: Convert to fraction form
    310,318.31/465,476.64 = 82,613.93/x
  3. Step 3: Cross multiply
    310,318.31x = 465,476.64 × 82,613.93
  4. Step 4: Simplify right side
    310,318.31x = 38,454,855,717.29
  5. Step 5: Solve for x
    x = 38,454,855,717.29/310,318.31
  6. Step 6: Final answer
    x = 123,920.68

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1.5x scale

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.