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Finding the Fourth Proportional to 360,012.80, 540,019.20 and 220,044.80

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Solution

The fourth proportional to 360,012.80, 540,019.20 and 220,044.80 is: 330,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,012.80 : 540,019.20 = 220,044.80 : x
  2. Step 2: Convert to fraction form
    360,012.80/540,019.20 = 220,044.80/x
  3. Step 3: Cross multiply
    360,012.80x = 540,019.20 × 220,044.80
  4. Step 4: Simplify right side
    360,012.80x = 118,828,416,860.16
  5. Step 5: Solve for x
    x = 118,828,416,860.16/360,012.80
  6. Step 6: Final answer
    x = 330,067.20

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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.