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Finding the Fourth Proportional to 315,013.80, 472,520.70 and 115,340.70

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Solution

The fourth proportional to 315,013.80, 472,520.70 and 115,340.70 is: 173,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,013.80 : 472,520.70 = 115,340.70 : x
  2. Step 2: Convert to fraction form
    315,013.80/472,520.70 = 115,340.70/x
  3. Step 3: Cross multiply
    315,013.80x = 472,520.70 × 115,340.70
  4. Step 4: Simplify right side
    315,013.80x = 54,500,868,302.49
  5. Step 5: Solve for x
    x = 54,500,868,302.49/315,013.80
  6. Step 6: Final answer
    x = 173,011.05

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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.