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Finding the Fourth Proportional to 359,751, 539,652.66 and 138,135

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Solution

The fourth proportional to 359,751, 539,652.66 and 138,135 is: 207,212.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,751 : 539,652.66 = 138,135 : x
  2. Step 2: Convert to fraction form
    359,751/539,652.66 = 138,135/x
  3. Step 3: Cross multiply
    359,751x = 539,652.66 × 138,135
  4. Step 4: Simplify right side
    359,751x = 74,544,920,189.10
  5. Step 5: Solve for x
    x = 74,544,920,189.10/359,751
  6. Step 6: Final answer
    x = 207,212.54

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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.