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Finding the Fourth Proportional to 403,803.80, 557,226.24 and 231,685.28

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Solution

The fourth proportional to 403,803.80, 557,226.24 and 231,685.28 is: 319,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,803.80 : 557,226.24 = 231,685.28 : x
  2. Step 2: Convert to fraction form
    403,803.80/557,226.24 = 231,685.28/x
  3. Step 3: Cross multiply
    403,803.80x = 557,226.24 × 231,685.28
  4. Step 4: Simplify right side
    403,803.80x = 129,101,117,437.75
  5. Step 5: Solve for x
    x = 129,101,117,437.75/403,803.80
  6. Step 6: Final answer
    x = 319,712.49

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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.