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Finding the Fourth Proportional to 445,248.84, 667,866.12 and 141,638.76

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Solution

The fourth proportional to 445,248.84, 667,866.12 and 141,638.76 is: 212,455.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,248.84 : 667,866.12 = 141,638.76 : x
  2. Step 2: Convert to fraction form
    445,248.84/667,866.12 = 141,638.76/x
  3. Step 3: Cross multiply
    445,248.84x = 667,866.12 × 141,638.76
  4. Step 4: Simplify right side
    445,248.84x = 94,595,729,082.81
  5. Step 5: Solve for x
    x = 94,595,729,082.81/445,248.84
  6. Step 6: Final answer
    x = 212,455.87

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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.