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Finding the Fourth Proportional to 262,209.60, 393,314.40 and 220,219.20

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Solution

The fourth proportional to 262,209.60, 393,314.40 and 220,219.20 is: 330,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,209.60 : 393,314.40 = 220,219.20 : x
  2. Step 2: Convert to fraction form
    262,209.60/393,314.40 = 220,219.20/x
  3. Step 3: Cross multiply
    262,209.60x = 393,314.40 × 220,219.20
  4. Step 4: Simplify right side
    262,209.60x = 86,615,382,516.48
  5. Step 5: Solve for x
    x = 86,615,382,516.48/262,209.60
  6. Step 6: Final answer
    x = 330,328.80

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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.