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Finding the Fourth Proportional to 330,471.13, 495,706.98 and 90,587.64

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Solution

The fourth proportional to 330,471.13, 495,706.98 and 90,587.64 is: 135,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,471.13 : 495,706.98 = 90,587.64 : x
  2. Step 2: Convert to fraction form
    330,471.13/495,706.98 = 90,587.64/x
  3. Step 3: Cross multiply
    330,471.13x = 495,706.98 × 90,587.64
  4. Step 4: Simplify right side
    330,471.13x = 44,904,927,393.55
  5. Step 5: Solve for x
    x = 44,904,927,393.55/330,471.13
  6. Step 6: Final answer
    x = 135,881.54

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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.