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Finding the Fourth Proportional to 331,477.20, 497,124.90 and 91,533.78

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Solution

The fourth proportional to 331,477.20, 497,124.90 and 91,533.78 is: 137,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,477.20 : 497,124.90 = 91,533.78 : x
  2. Step 2: Convert to fraction form
    331,477.20/497,124.90 = 91,533.78/x
  3. Step 3: Cross multiply
    331,477.20x = 497,124.90 × 91,533.78
  4. Step 4: Simplify right side
    331,477.20x = 45,503,721,229.12
  5. Step 5: Solve for x
    x = 45,503,721,229.12/331,477.20
  6. Step 6: Final answer
    x = 137,275.57

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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.