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Finding the Fourth Proportional to 391,498.02, 587,320.83 and 125,187.03

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Solution

The fourth proportional to 391,498.02, 587,320.83 and 125,187.03 is: 187,804.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,498.02 : 587,320.83 = 125,187.03 : x
  2. Step 2: Convert to fraction form
    391,498.02/587,320.83 = 125,187.03/x
  3. Step 3: Cross multiply
    391,498.02x = 587,320.83 × 125,187.03
  4. Step 4: Simplify right side
    391,498.02x = 73,524,950,364.83
  5. Step 5: Solve for x
    x = 73,524,950,364.83/391,498.02
  6. Step 6: Final answer
    x = 187,804.14

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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.