Home / 291,259.30-436,014.15-172,869.70

Finding the Fourth Proportional to 291,259.30, 436,014.15 and 172,869.70

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Solution

The fourth proportional to 291,259.30, 436,014.15 and 172,869.70 is: 258,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,259.30 : 436,014.15 = 172,869.70 : x
  2. Step 2: Convert to fraction form
    291,259.30/436,014.15 = 172,869.70/x
  3. Step 3: Cross multiply
    291,259.30x = 436,014.15 × 172,869.70
  4. Step 4: Simplify right side
    291,259.30x = 75,373,635,306.26
  5. Step 5: Solve for x
    x = 75,373,635,306.26/291,259.30
  6. Step 6: Final answer
    x = 258,785.33

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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.