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Finding the Fourth Proportional to 359,611, 539,442.42 and 137,995

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Solution

The fourth proportional to 359,611, 539,442.42 and 137,995 is: 207,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,611 : 539,442.42 = 137,995 : x
  2. Step 2: Convert to fraction form
    359,611/539,442.42 = 137,995/x
  3. Step 3: Cross multiply
    359,611x = 539,442.42 × 137,995
  4. Step 4: Simplify right side
    359,611x = 74,440,356,747.90
  5. Step 5: Solve for x
    x = 74,440,356,747.90/359,611
  6. Step 6: Final answer
    x = 207,002.45

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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.