Home / 459,751.20-689,626.80-144,207.60

Finding the Fourth Proportional to 459,751.20, 689,626.80 and 144,207.60

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Solution

The fourth proportional to 459,751.20, 689,626.80 and 144,207.60 is: 216,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,751.20 : 689,626.80 = 144,207.60 : x
  2. Step 2: Convert to fraction form
    459,751.20/689,626.80 = 144,207.60/x
  3. Step 3: Cross multiply
    459,751.20x = 689,626.80 × 144,207.60
  4. Step 4: Simplify right side
    459,751.20x = 99,449,425,723.68
  5. Step 5: Solve for x
    x = 99,449,425,723.68/459,751.20
  6. Step 6: Final answer
    x = 216,311.40

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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.