Home / 313,109.40-469,279.20-144,395.52

Finding the Fourth Proportional to 313,109.40, 469,279.20 and 144,395.52

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Solution

The fourth proportional to 313,109.40, 469,279.20 and 144,395.52 is: 216,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,109.40 : 469,279.20 = 144,395.52 : x
  2. Step 2: Convert to fraction form
    313,109.40/469,279.20 = 144,395.52/x
  3. Step 3: Cross multiply
    313,109.40x = 469,279.20 × 144,395.52
  4. Step 4: Simplify right side
    313,109.40x = 67,761,814,109.18
  5. Step 5: Solve for x
    x = 67,761,814,109.18/313,109.40
  6. Step 6: Final answer
    x = 216,415.78

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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.