Home / 458,756.10-688,134.24-143,240.04

Finding the Fourth Proportional to 458,756.10, 688,134.24 and 143,240.04

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Solution

The fourth proportional to 458,756.10, 688,134.24 and 143,240.04 is: 214,860.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,756.10 : 688,134.24 = 143,240.04 : x
  2. Step 2: Convert to fraction form
    458,756.10/688,134.24 = 143,240.04/x
  3. Step 3: Cross multiply
    458,756.10x = 688,134.24 × 143,240.04
  4. Step 4: Simplify right side
    458,756.10x = 98,568,376,062.97
  5. Step 5: Solve for x
    x = 98,568,376,062.97/458,756.10
  6. Step 6: Final answer
    x = 214,860.09

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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.