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Finding the Fourth Proportional to 353,231.71, 487,472.55 and 202,357.87

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Solution

The fourth proportional to 353,231.71, 487,472.55 and 202,357.87 is: 279,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,231.71 : 487,472.55 = 202,357.87 : x
  2. Step 2: Convert to fraction form
    353,231.71/487,472.55 = 202,357.87/x
  3. Step 3: Cross multiply
    353,231.71x = 487,472.55 × 202,357.87
  4. Step 4: Simplify right side
    353,231.71x = 98,643,904,464.11
  5. Step 5: Solve for x
    x = 98,643,904,464.11/353,231.71
  6. Step 6: Final answer
    x = 279,261.18

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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.