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Finding the Fourth Proportional to 391,501.08, 587,339.13 and 125,277.58

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Solution

The fourth proportional to 391,501.08, 587,339.13 and 125,277.58 is: 187,944.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,501.08 : 587,339.13 = 125,277.58 : x
  2. Step 2: Convert to fraction form
    391,501.08/587,339.13 = 125,277.58/x
  3. Step 3: Cross multiply
    391,501.08x = 587,339.13 × 125,277.58
  4. Step 4: Simplify right side
    391,501.08x = 73,580,424,845.71
  5. Step 5: Solve for x
    x = 73,580,424,845.71/391,501.08
  6. Step 6: Final answer
    x = 187,944.37

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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.