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Finding the Fourth Proportional to 391,064.40, 586,596.60 and 124,844.40

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Solution

The fourth proportional to 391,064.40, 586,596.60 and 124,844.40 is: 187,266.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,064.40 : 586,596.60 = 124,844.40 : x
  2. Step 2: Convert to fraction form
    391,064.40/586,596.60 = 124,844.40/x
  3. Step 3: Cross multiply
    391,064.40x = 586,596.60 × 124,844.40
  4. Step 4: Simplify right side
    391,064.40x = 73,233,300,569.04
  5. Step 5: Solve for x
    x = 73,233,300,569.04/391,064.40
  6. Step 6: Final answer
    x = 187,266.60

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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.