Home / 460,021.20-690,031.80-144,477.60

Finding the Fourth Proportional to 460,021.20, 690,031.80 and 144,477.60

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Solution

The fourth proportional to 460,021.20, 690,031.80 and 144,477.60 is: 216,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,021.20 : 690,031.80 = 144,477.60 : x
  2. Step 2: Convert to fraction form
    460,021.20/690,031.80 = 144,477.60/x
  3. Step 3: Cross multiply
    460,021.20x = 690,031.80 × 144,477.60
  4. Step 4: Simplify right side
    460,021.20x = 99,694,138,387.68
  5. Step 5: Solve for x
    x = 99,694,138,387.68/460,021.20
  6. Step 6: Final answer
    x = 216,716.40

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Similar ratio
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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.