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Finding the Fourth Proportional to 438,995.60, 658,522.20 and 123,462.80

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Solution

The fourth proportional to 438,995.60, 658,522.20 and 123,462.80 is: 185,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,995.60 : 658,522.20 = 123,462.80 : x
  2. Step 2: Convert to fraction form
    438,995.60/658,522.20 = 123,462.80/x
  3. Step 3: Cross multiply
    438,995.60x = 658,522.20 × 123,462.80
  4. Step 4: Simplify right side
    438,995.60x = 81,302,994,674.16
  5. Step 5: Solve for x
    x = 81,302,994,674.16/438,995.60
  6. Step 6: Final answer
    x = 185,202.30

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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.