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Finding the Fourth Proportional to 359,941.20, 539,911.80 and 160,261.20

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Solution

The fourth proportional to 359,941.20, 539,911.80 and 160,261.20 is: 240,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,941.20 : 539,911.80 = 160,261.20 : x
  2. Step 2: Convert to fraction form
    359,941.20/539,911.80 = 160,261.20/x
  3. Step 3: Cross multiply
    359,941.20x = 539,911.80 × 160,261.20
  4. Step 4: Simplify right side
    359,941.20x = 86,526,912,962.16
  5. Step 5: Solve for x
    x = 86,526,912,962.16/359,941.20
  6. Step 6: Final answer
    x = 240,391.80

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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.