Home / 459,659.38-689,489.07-144,141.70

Finding the Fourth Proportional to 459,659.38, 689,489.07 and 144,141.70

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Solution

The fourth proportional to 459,659.38, 689,489.07 and 144,141.70 is: 216,212.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,659.38 : 689,489.07 = 144,141.70 : x
  2. Step 2: Convert to fraction form
    459,659.38/689,489.07 = 144,141.70/x
  3. Step 3: Cross multiply
    459,659.38x = 689,489.07 × 144,141.70
  4. Step 4: Simplify right side
    459,659.38x = 99,384,126,681.22
  5. Step 5: Solve for x
    x = 99,384,126,681.22/459,659.38
  6. Step 6: Final answer
    x = 216,212.55

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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.