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Finding the Fourth Proportional to 253,459.40, 349,737.36 and 140,281.88

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Solution

The fourth proportional to 253,459.40, 349,737.36 and 140,281.88 is: 193,568.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,459.40 : 349,737.36 = 140,281.88 : x
  2. Step 2: Convert to fraction form
    253,459.40/349,737.36 = 140,281.88/x
  3. Step 3: Cross multiply
    253,459.40x = 349,737.36 × 140,281.88
  4. Step 4: Simplify right side
    253,459.40x = 49,061,814,367.04
  5. Step 5: Solve for x
    x = 49,061,814,367.04/253,459.40
  6. Step 6: Final answer
    x = 193,568.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.