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Finding the Fourth Proportional to 442,689.33, 663,639.51 and 162,140.97

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Solution

The fourth proportional to 442,689.33, 663,639.51 and 162,140.97 is: 243,066.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,689.33 : 663,639.51 = 162,140.97 : x
  2. Step 2: Convert to fraction form
    442,689.33/663,639.51 = 162,140.97/x
  3. Step 3: Cross multiply
    442,689.33x = 663,639.51 × 162,140.97
  4. Step 4: Simplify right side
    442,689.33x = 107,603,153,881.73
  5. Step 5: Solve for x
    x = 107,603,153,881.73/442,689.33
  6. Step 6: Final answer
    x = 243,066.97

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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.