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Finding the Fourth Proportional to 203,462.13, 280,766.30 and 112,812.69

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Solution

The fourth proportional to 203,462.13, 280,766.30 and 112,812.69 is: 155,675.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,462.13 : 280,766.30 = 112,812.69 : x
  2. Step 2: Convert to fraction form
    203,462.13/280,766.30 = 112,812.69/x
  3. Step 3: Cross multiply
    203,462.13x = 280,766.30 × 112,812.69
  4. Step 4: Simplify right side
    203,462.13x = 31,674,001,000.28
  5. Step 5: Solve for x
    x = 31,674,001,000.28/203,462.13
  6. Step 6: Final answer
    x = 155,675.17

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1.5x scale

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.