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Finding the Fourth Proportional to 330,508.64, 495,774.72 and 105,839.88

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Solution

The fourth proportional to 330,508.64, 495,774.72 and 105,839.88 is: 158,763.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,508.64 : 495,774.72 = 105,839.88 : x
  2. Step 2: Convert to fraction form
    330,508.64/495,774.72 = 105,839.88/x
  3. Step 3: Cross multiply
    330,508.64x = 495,774.72 × 105,839.88
  4. Step 4: Simplify right side
    330,508.64x = 52,472,736,871.83
  5. Step 5: Solve for x
    x = 52,472,736,871.83/330,508.64
  6. Step 6: Final answer
    x = 158,763.59

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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.