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Finding the Fourth Proportional to 359,784.81, 539,578.69 and 135,127.87

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Solution

The fourth proportional to 359,784.81, 539,578.69 and 135,127.87 is: 202,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,784.81 : 539,578.69 = 135,127.87 : x
  2. Step 2: Convert to fraction form
    359,784.81/539,578.69 = 135,127.87/x
  3. Step 3: Cross multiply
    359,784.81x = 539,578.69 × 135,127.87
  4. Step 4: Simplify right side
    359,784.81x = 72,912,119,077.09
  5. Step 5: Solve for x
    x = 72,912,119,077.09/359,784.81
  6. Step 6: Final answer
    x = 202,654.80

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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.