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Finding the Fourth Proportional to 359,269.60, 538,904.40 and 122,879.20

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Solution

The fourth proportional to 359,269.60, 538,904.40 and 122,879.20 is: 184,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,269.60 : 538,904.40 = 122,879.20 : x
  2. Step 2: Convert to fraction form
    359,269.60/538,904.40 = 122,879.20/x
  3. Step 3: Cross multiply
    359,269.60x = 538,904.40 × 122,879.20
  4. Step 4: Simplify right side
    359,269.60x = 66,220,141,548.48
  5. Step 5: Solve for x
    x = 66,220,141,548.48/359,269.60
  6. Step 6: Final answer
    x = 184,318.80

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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.