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Finding the Fourth Proportional to 359,378.60, 539,115.90 and 122,661.80

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Solution

The fourth proportional to 359,378.60, 539,115.90 and 122,661.80 is: 184,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,378.60 : 539,115.90 = 122,661.80 : x
  2. Step 2: Convert to fraction form
    359,378.60/539,115.90 = 122,661.80/x
  3. Step 3: Cross multiply
    359,378.60x = 539,115.90 × 122,661.80
  4. Step 4: Simplify right side
    359,378.60x = 66,128,926,702.62
  5. Step 5: Solve for x
    x = 66,128,926,702.62/359,378.60
  6. Step 6: Final answer
    x = 184,009.08

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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.