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Finding the Fourth Proportional to 391,168.36, 586,723.38 and 124,957

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Solution

The fourth proportional to 391,168.36, 586,723.38 and 124,957 is: 187,426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,168.36 : 586,723.38 = 124,957 : x
  2. Step 2: Convert to fraction form
    391,168.36/586,723.38 = 124,957/x
  3. Step 3: Cross multiply
    391,168.36x = 586,723.38 × 124,957
  4. Step 4: Simplify right side
    391,168.36x = 73,315,193,394.66
  5. Step 5: Solve for x
    x = 73,315,193,394.66/391,168.36
  6. Step 6: Final answer
    x = 187,426.18

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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.