Home / 459,437.38-689,155.66-143,918.90

Finding the Fourth Proportional to 459,437.38, 689,155.66 and 143,918.90

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Solution

The fourth proportional to 459,437.38, 689,155.66 and 143,918.90 is: 215,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,437.38 : 689,155.66 = 143,918.90 : x
  2. Step 2: Convert to fraction form
    459,437.38/689,155.66 = 143,918.90/x
  3. Step 3: Cross multiply
    459,437.38x = 689,155.66 × 143,918.90
  4. Step 4: Simplify right side
    459,437.38x = 99,182,524,515.97
  5. Step 5: Solve for x
    x = 99,182,524,515.97/459,437.38
  6. Step 6: Final answer
    x = 215,878.22

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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.