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Finding the Fourth Proportional to 315,553.32, 472,979.36 and 240,425.76

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Solution

The fourth proportional to 315,553.32, 472,979.36 and 240,425.76 is: 360,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,553.32 : 472,979.36 = 240,425.76 : x
  2. Step 2: Convert to fraction form
    315,553.32/472,979.36 = 240,425.76/x
  3. Step 3: Cross multiply
    315,553.32x = 472,979.36 × 240,425.76
  4. Step 4: Simplify right side
    315,553.32x = 113,716,422,092.31
  5. Step 5: Solve for x
    x = 113,716,422,092.31/315,553.32
  6. Step 6: Final answer
    x = 360,371.50

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1.5x scale

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.