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Finding the Fourth Proportional to 359,013.60, 538,520.40 and 247,039.20

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Solution

The fourth proportional to 359,013.60, 538,520.40 and 247,039.20 is: 370,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,013.60 : 538,520.40 = 247,039.20 : x
  2. Step 2: Convert to fraction form
    359,013.60/538,520.40 = 247,039.20/x
  3. Step 3: Cross multiply
    359,013.60x = 538,520.40 × 247,039.20
  4. Step 4: Simplify right side
    359,013.60x = 133,035,648,799.68
  5. Step 5: Solve for x
    x = 133,035,648,799.68/359,013.60
  6. Step 6: Final answer
    x = 370,558.80

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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.