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Finding the Fourth Proportional to 330,178.92, 495,244.16 and 105,479.04

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Solution

The fourth proportional to 330,178.92, 495,244.16 and 105,479.04 is: 158,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,178.92 : 495,244.16 = 105,479.04 : x
  2. Step 2: Convert to fraction form
    330,178.92/495,244.16 = 105,479.04/x
  3. Step 3: Cross multiply
    330,178.92x = 495,244.16 × 105,479.04
  4. Step 4: Simplify right side
    330,178.92x = 52,237,878,562.41
  5. Step 5: Solve for x
    x = 52,237,878,562.41/330,178.92
  6. Step 6: Final answer
    x = 158,210.82

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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.