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Finding the Fourth Proportional to 387,333.36, 580,474.62 and 187,255.26

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Solution

The fourth proportional to 387,333.36, 580,474.62 and 187,255.26 is: 280,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,333.36 : 580,474.62 = 187,255.26 : x
  2. Step 2: Convert to fraction form
    387,333.36/580,474.62 = 187,255.26/x
  3. Step 3: Cross multiply
    387,333.36x = 580,474.62 × 187,255.26
  4. Step 4: Simplify right side
    387,333.36x = 108,696,925,891.50
  5. Step 5: Solve for x
    x = 108,696,925,891.50/387,333.36
  6. Step 6: Final answer
    x = 280,628.88

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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.