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Finding the Fourth Proportional to 331,380.30, 497,329.65 and 153,909.30

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Solution

The fourth proportional to 331,380.30, 497,329.65 and 153,909.30 is: 230,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,380.30 : 497,329.65 = 153,909.30 : x
  2. Step 2: Convert to fraction form
    331,380.30/497,329.65 = 153,909.30/x
  3. Step 3: Cross multiply
    331,380.30x = 497,329.65 × 153,909.30
  4. Step 4: Simplify right side
    331,380.30x = 76,543,658,300.75
  5. Step 5: Solve for x
    x = 76,543,658,300.75/331,380.30
  6. Step 6: Final answer
    x = 230,984.34

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1.5x scale

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.