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Finding the Fourth Proportional to 315,149.64, 472,724.52 and 104,789.40

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Solution

The fourth proportional to 315,149.64, 472,724.52 and 104,789.40 is: 157,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,149.64 : 472,724.52 = 104,789.40 : x
  2. Step 2: Convert to fraction form
    315,149.64/472,724.52 = 104,789.40/x
  3. Step 3: Cross multiply
    315,149.64x = 472,724.52 × 104,789.40
  4. Step 4: Simplify right side
    315,149.64x = 49,536,518,816.09
  5. Step 5: Solve for x
    x = 49,536,518,816.09/315,149.64
  6. Step 6: Final answer
    x = 157,184.12

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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.