Home / 459,317.90-688,998.45-143,785.10

Finding the Fourth Proportional to 459,317.90, 688,998.45 and 143,785.10

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Solution

The fourth proportional to 459,317.90, 688,998.45 and 143,785.10 is: 215,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,317.90 : 688,998.45 = 143,785.10 : x
  2. Step 2: Convert to fraction form
    459,317.90/688,998.45 = 143,785.10/x
  3. Step 3: Cross multiply
    459,317.90x = 688,998.45 × 143,785.10
  4. Step 4: Simplify right side
    459,317.90x = 99,067,711,033.10
  5. Step 5: Solve for x
    x = 99,067,711,033.10/459,317.90
  6. Step 6: Final answer
    x = 215,684.41

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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.