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Finding the Fourth Proportional to 359,600.80, 539,401.20 and 219,632.80

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Solution

The fourth proportional to 359,600.80, 539,401.20 and 219,632.80 is: 329,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,600.80 : 539,401.20 = 219,632.80 : x
  2. Step 2: Convert to fraction form
    359,600.80/539,401.20 = 219,632.80/x
  3. Step 3: Cross multiply
    359,600.80x = 539,401.20 × 219,632.80
  4. Step 4: Simplify right side
    359,600.80x = 118,470,195,879.36
  5. Step 5: Solve for x
    x = 118,470,195,879.36/359,600.80
  6. Step 6: Final answer
    x = 329,449.20

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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.