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Finding the Fourth Proportional to 359,245.40, 538,868.10 and 270,015.80

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Solution

The fourth proportional to 359,245.40, 538,868.10 and 270,015.80 is: 405,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,245.40 : 538,868.10 = 270,015.80 : x
  2. Step 2: Convert to fraction form
    359,245.40/538,868.10 = 270,015.80/x
  3. Step 3: Cross multiply
    359,245.40x = 538,868.10 × 270,015.80
  4. Step 4: Simplify right side
    359,245.40x = 145,502,901,115.98
  5. Step 5: Solve for x
    x = 145,502,901,115.98/359,245.40
  6. Step 6: Final answer
    x = 405,023.70

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Similar ratio
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1.5x scale

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.