Home / 331,478.20-497,126.40-91,534.78

Finding the Fourth Proportional to 331,478.20, 497,126.40 and 91,534.78

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Solution

The fourth proportional to 331,478.20, 497,126.40 and 91,534.78 is: 137,277.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,478.20 : 497,126.40 = 91,534.78 : x
  2. Step 2: Convert to fraction form
    331,478.20/497,126.40 = 91,534.78/x
  3. Step 3: Cross multiply
    331,478.20x = 497,126.40 × 91,534.78
  4. Step 4: Simplify right side
    331,478.20x = 45,504,355,656.19
  5. Step 5: Solve for x
    x = 45,504,355,656.19/331,478.20
  6. Step 6: Final answer
    x = 137,277.07

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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.