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Finding the Fourth Proportional to 554,488.72, 831,785.46 and 155,129.56

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Solution

The fourth proportional to 554,488.72, 831,785.46 and 155,129.56 is: 232,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,488.72 : 831,785.46 = 155,129.56 : x
  2. Step 2: Convert to fraction form
    554,488.72/831,785.46 = 155,129.56/x
  3. Step 3: Cross multiply
    554,488.72x = 831,785.46 × 155,129.56
  4. Step 4: Simplify right side
    554,488.72x = 129,034,512,424.20
  5. Step 5: Solve for x
    x = 129,034,512,424.20/554,488.72
  6. Step 6: Final answer
    x = 232,708.99

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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.