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Finding the Fourth Proportional to 331,603.20, 497,599.20 and 121,262.40

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Solution

The fourth proportional to 331,603.20, 497,599.20 and 121,262.40 is: 181,964.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,603.20 : 497,599.20 = 121,262.40 : x
  2. Step 2: Convert to fraction form
    331,603.20/497,599.20 = 121,262.40/x
  3. Step 3: Cross multiply
    331,603.20x = 497,599.20 × 121,262.40
  4. Step 4: Simplify right side
    331,603.20x = 60,340,073,230.08
  5. Step 5: Solve for x
    x = 60,340,073,230.08/331,603.20
  6. Step 6: Final answer
    x = 181,964.69

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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.