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Finding the Fourth Proportional to 359,529.87, 539,295.42 and 287,938.11

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Solution

The fourth proportional to 359,529.87, 539,295.42 and 287,938.11 is: 431,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,529.87 : 539,295.42 = 287,938.11 : x
  2. Step 2: Convert to fraction form
    359,529.87/539,295.42 = 287,938.11/x
  3. Step 3: Cross multiply
    359,529.87x = 539,295.42 × 287,938.11
  4. Step 4: Simplify right side
    359,529.87x = 155,283,707,650.23
  5. Step 5: Solve for x
    x = 155,283,707,650.23/359,529.87
  6. Step 6: Final answer
    x = 431,907.66

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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.