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Finding the Fourth Proportional to 442,920.90, 664,381.35 and 162,401.70

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Solution

The fourth proportional to 442,920.90, 664,381.35 and 162,401.70 is: 243,602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,920.90 : 664,381.35 = 162,401.70 : x
  2. Step 2: Convert to fraction form
    442,920.90/664,381.35 = 162,401.70/x
  3. Step 3: Cross multiply
    442,920.90x = 664,381.35 × 162,401.70
  4. Step 4: Simplify right side
    442,920.90x = 107,896,660,688.30
  5. Step 5: Solve for x
    x = 107,896,660,688.30/442,920.90
  6. Step 6: Final answer
    x = 243,602.55

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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.