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Finding the Fourth Proportional to 359,289.60, 538,934.40 and 330,129.60

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Solution

The fourth proportional to 359,289.60, 538,934.40 and 330,129.60 is: 495,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,289.60 : 538,934.40 = 330,129.60 : x
  2. Step 2: Convert to fraction form
    359,289.60/538,934.40 = 330,129.60/x
  3. Step 3: Cross multiply
    359,289.60x = 538,934.40 × 330,129.60
  4. Step 4: Simplify right side
    359,289.60x = 177,918,197,898.24
  5. Step 5: Solve for x
    x = 177,918,197,898.24/359,289.60
  6. Step 6: Final answer
    x = 495,194.40

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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.