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Finding the Fourth Proportional to 329,909.70, 494,648.55 and 130,109.70

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Solution

The fourth proportional to 329,909.70, 494,648.55 and 130,109.70 is: 195,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,909.70 : 494,648.55 = 130,109.70 : x
  2. Step 2: Convert to fraction form
    329,909.70/494,648.55 = 130,109.70/x
  3. Step 3: Cross multiply
    329,909.70x = 494,648.55 × 130,109.70
  4. Step 4: Simplify right side
    329,909.70x = 64,358,574,445.94
  5. Step 5: Solve for x
    x = 64,358,574,445.94/329,909.70
  6. Step 6: Final answer
    x = 195,079.36

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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.