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Finding the Fourth Proportional to 517,493.31, 776,195.50 and 315,036.87

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Solution

The fourth proportional to 517,493.31, 776,195.50 and 315,036.87 is: 472,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,493.31 : 776,195.50 = 315,036.87 : x
  2. Step 2: Convert to fraction form
    517,493.31/776,195.50 = 315,036.87/x
  3. Step 3: Cross multiply
    517,493.31x = 776,195.50 × 315,036.87
  4. Step 4: Simplify right side
    517,493.31x = 244,530,199,252.90
  5. Step 5: Solve for x
    x = 244,530,199,252.90/517,493.31
  6. Step 6: Final answer
    x = 472,528.23

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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.