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Finding the Fourth Proportional to 331,193.20, 497,119.40 and 153,740.40

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Solution

The fourth proportional to 331,193.20, 497,119.40 and 153,740.40 is: 230,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,193.20 : 497,119.40 = 153,740.40 : x
  2. Step 2: Convert to fraction form
    331,193.20/497,119.40 = 153,740.40/x
  3. Step 3: Cross multiply
    331,193.20x = 497,119.40 × 153,740.40
  4. Step 4: Simplify right side
    331,193.20x = 76,427,335,403.76
  5. Step 5: Solve for x
    x = 76,427,335,403.76/331,193.20
  6. Step 6: Final answer
    x = 230,763.60

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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.