Home / 459,430.38-689,145.17-143,911.89

Finding the Fourth Proportional to 459,430.38, 689,145.17 and 143,911.89

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Solution

The fourth proportional to 459,430.38, 689,145.17 and 143,911.89 is: 215,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,430.38 : 689,145.17 = 143,911.89 : x
  2. Step 2: Convert to fraction form
    459,430.38/689,145.17 = 143,911.89/x
  3. Step 3: Cross multiply
    459,430.38x = 689,145.17 × 143,911.89
  4. Step 4: Simplify right side
    459,430.38x = 99,176,183,179.51
  5. Step 5: Solve for x
    x = 99,176,183,179.51/459,430.38
  6. Step 6: Final answer
    x = 215,867.71

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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.