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Finding the Fourth Proportional to 457,240.68, 630,983.88 and 253,290.98

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Solution

The fourth proportional to 457,240.68, 630,983.88 and 253,290.98 is: 349,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,240.68 : 630,983.88 = 253,290.98 : x
  2. Step 2: Convert to fraction form
    457,240.68/630,983.88 = 253,290.98/x
  3. Step 3: Cross multiply
    457,240.68x = 630,983.88 × 253,290.98
  4. Step 4: Simplify right side
    457,240.68x = 159,822,522,174.48
  5. Step 5: Solve for x
    x = 159,822,522,174.48/457,240.68
  6. Step 6: Final answer
    x = 349,536.97

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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.