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Finding the Fourth Proportional to 335,780.40, 503,233.20 and 135,937.20

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Solution

The fourth proportional to 335,780.40, 503,233.20 and 135,937.20 is: 203,728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,780.40 : 503,233.20 = 135,937.20 : x
  2. Step 2: Convert to fraction form
    335,780.40/503,233.20 = 135,937.20/x
  3. Step 3: Cross multiply
    335,780.40x = 503,233.20 × 135,937.20
  4. Step 4: Simplify right side
    335,780.40x = 68,408,112,155.04
  5. Step 5: Solve for x
    x = 68,408,112,155.04/335,780.40
  6. Step 6: Final answer
    x = 203,728.72

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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.