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Finding the Fourth Proportional to 315,008.80, 472,513.20 and 115,335.70

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Solution

The fourth proportional to 315,008.80, 472,513.20 and 115,335.70 is: 173,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,008.80 : 472,513.20 = 115,335.70 : x
  2. Step 2: Convert to fraction form
    315,008.80/472,513.20 = 115,335.70/x
  3. Step 3: Cross multiply
    315,008.80x = 472,513.20 × 115,335.70
  4. Step 4: Simplify right side
    315,008.80x = 54,497,640,681.24
  5. Step 5: Solve for x
    x = 54,497,640,681.24/315,008.80
  6. Step 6: Final answer
    x = 173,003.55

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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.