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Finding the Fourth Proportional to 154,318.59, 231,478.47 and 54,424.53

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Solution

The fourth proportional to 154,318.59, 231,478.47 and 54,424.53 is: 81,637.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,318.59 : 231,478.47 = 54,424.53 : x
  2. Step 2: Convert to fraction form
    154,318.59/231,478.47 = 54,424.53/x
  3. Step 3: Cross multiply
    154,318.59x = 231,478.47 × 54,424.53
  4. Step 4: Simplify right side
    154,318.59x = 12,598,106,934.87
  5. Step 5: Solve for x
    x = 12,598,106,934.87/154,318.59
  6. Step 6: Final answer
    x = 81,637.00

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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.