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Finding the Fourth Proportional to 391,137.34, 586,701.06 and 124,894.48

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Solution

The fourth proportional to 391,137.34, 586,701.06 and 124,894.48 is: 187,340.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,137.34 : 586,701.06 = 124,894.48 : x
  2. Step 2: Convert to fraction form
    391,137.34/586,701.06 = 124,894.48/x
  3. Step 3: Cross multiply
    391,137.34x = 586,701.06 × 124,894.48
  4. Step 4: Simplify right side
    391,137.34x = 73,275,723,804.15
  5. Step 5: Solve for x
    x = 73,275,723,804.15/391,137.34
  6. Step 6: Final answer
    x = 187,340.14

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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.