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Finding the Fourth Proportional to 359,613, 539,445.42 and 137,997

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Solution

The fourth proportional to 359,613, 539,445.42 and 137,997 is: 207,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,613 : 539,445.42 = 137,997 : x
  2. Step 2: Convert to fraction form
    359,613/539,445.42 = 137,997/x
  3. Step 3: Cross multiply
    359,613x = 539,445.42 × 137,997
  4. Step 4: Simplify right side
    359,613x = 74,441,849,623.74
  5. Step 5: Solve for x
    x = 74,441,849,623.74/359,613
  6. Step 6: Final answer
    x = 207,005.45

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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.