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Finding the Fourth Proportional to 457,018.25, 630,641.17 and 273,220.49

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Solution

The fourth proportional to 457,018.25, 630,641.17 and 273,220.49 is: 377,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,018.25 : 630,641.17 = 273,220.49 : x
  2. Step 2: Convert to fraction form
    457,018.25/630,641.17 = 273,220.49/x
  3. Step 3: Cross multiply
    457,018.25x = 630,641.17 × 273,220.49
  4. Step 4: Simplify right side
    457,018.25x = 172,304,085,645.32
  5. Step 5: Solve for x
    x = 172,304,085,645.32/457,018.25
  6. Step 6: Final answer
    x = 377,017.96

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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.