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Finding the Fourth Proportional to 391,083.96, 586,613.34 and 124,860.72

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Solution

The fourth proportional to 391,083.96, 586,613.34 and 124,860.72 is: 187,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,083.96 : 586,613.34 = 124,860.72 : x
  2. Step 2: Convert to fraction form
    391,083.96/586,613.34 = 124,860.72/x
  3. Step 3: Cross multiply
    391,083.96x = 586,613.34 × 124,860.72
  4. Step 4: Simplify right side
    391,083.96x = 73,244,963,994.00
  5. Step 5: Solve for x
    x = 73,244,963,994.00/391,083.96
  6. Step 6: Final answer
    x = 187,287.06

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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.