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Finding the Fourth Proportional to 391,601.52, 540,399.60 and 230,466.06

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Solution

The fourth proportional to 391,601.52, 540,399.60 and 230,466.06 is: 318,036.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,601.52 : 540,399.60 = 230,466.06 : x
  2. Step 2: Convert to fraction form
    391,601.52/540,399.60 = 230,466.06/x
  3. Step 3: Cross multiply
    391,601.52x = 540,399.60 × 230,466.06
  4. Step 4: Simplify right side
    391,601.52x = 124,543,766,637.58
  5. Step 5: Solve for x
    x = 124,543,766,637.58/391,601.52
  6. Step 6: Final answer
    x = 318,036.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.