Home / 458,964.12-688,446.07-143,421.04

Finding the Fourth Proportional to 458,964.12, 688,446.07 and 143,421.04

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Solution

The fourth proportional to 458,964.12, 688,446.07 and 143,421.04 is: 215,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,964.12 : 688,446.07 = 143,421.04 : x
  2. Step 2: Convert to fraction form
    458,964.12/688,446.07 = 143,421.04/x
  3. Step 3: Cross multiply
    458,964.12x = 688,446.07 × 143,421.04
  4. Step 4: Simplify right side
    458,964.12x = 98,737,649,263.65
  5. Step 5: Solve for x
    x = 98,737,649,263.65/458,964.12
  6. Step 6: Final answer
    x = 215,131.52

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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.