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Finding the Fourth Proportional to 143,507.68, 215,262 and 49,948

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Solution

The fourth proportional to 143,507.68, 215,262 and 49,948 is: 74,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,507.68 : 215,262 = 49,948 : x
  2. Step 2: Convert to fraction form
    143,507.68/215,262 = 49,948/x
  3. Step 3: Cross multiply
    143,507.68x = 215,262 × 49,948
  4. Step 4: Simplify right side
    143,507.68x = 10,751,906,376
  5. Step 5: Solve for x
    x = 10,751,906,376/143,507.68
  6. Step 6: Final answer
    x = 74,922.17

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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.