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Finding the Fourth Proportional to 359,245.60, 538,868.40 and 330,215.20

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Solution

The fourth proportional to 359,245.60, 538,868.40 and 330,215.20 is: 495,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,245.60 : 538,868.40 = 330,215.20 : x
  2. Step 2: Convert to fraction form
    359,245.60/538,868.40 = 330,215.20/x
  3. Step 3: Cross multiply
    359,245.60x = 538,868.40 × 330,215.20
  4. Step 4: Simplify right side
    359,245.60x = 177,942,536,479.68
  5. Step 5: Solve for x
    x = 177,942,536,479.68/359,245.60
  6. Step 6: Final answer
    x = 495,322.80

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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.