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Finding the Fourth Proportional to 330,167.80, 495,105.90 and 130,421.80

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Solution

The fourth proportional to 330,167.80, 495,105.90 and 130,421.80 is: 195,575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,167.80 : 495,105.90 = 130,421.80 : x
  2. Step 2: Convert to fraction form
    330,167.80/495,105.90 = 130,421.80/x
  3. Step 3: Cross multiply
    330,167.80x = 495,105.90 × 130,421.80
  4. Step 4: Simplify right side
    330,167.80x = 64,572,602,668.62
  5. Step 5: Solve for x
    x = 64,572,602,668.62/330,167.80
  6. Step 6: Final answer
    x = 195,575.11

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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.