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Finding the Fourth Proportional to 442,675.40, 663,138.30 and 242,637.80

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Solution

The fourth proportional to 442,675.40, 663,138.30 and 242,637.80 is: 363,477.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,675.40 : 663,138.30 = 242,637.80 : x
  2. Step 2: Convert to fraction form
    442,675.40/663,138.30 = 242,637.80/x
  3. Step 3: Cross multiply
    442,675.40x = 663,138.30 × 242,637.80
  4. Step 4: Simplify right side
    442,675.40x = 160,902,418,207.74
  5. Step 5: Solve for x
    x = 160,902,418,207.74/442,675.40
  6. Step 6: Final answer
    x = 363,477.21

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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.