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Finding the Fourth Proportional to 359,378.10, 538,909.26 and 134,580.87

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Solution

The fourth proportional to 359,378.10, 538,909.26 and 134,580.87 is: 201,812.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,378.10 : 538,909.26 = 134,580.87 : x
  2. Step 2: Convert to fraction form
    359,378.10/538,909.26 = 134,580.87/x
  3. Step 3: Cross multiply
    359,378.10x = 538,909.26 × 134,580.87
  4. Step 4: Simplify right side
    359,378.10x = 72,526,877,061.86
  5. Step 5: Solve for x
    x = 72,526,877,061.86/359,378.10
  6. Step 6: Final answer
    x = 201,812.18

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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.