Home / 380,721.60-570,823.20-144,028.80

Finding the Fourth Proportional to 380,721.60, 570,823.20 and 144,028.80

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Solution

The fourth proportional to 380,721.60, 570,823.20 and 144,028.80 is: 215,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,721.60 : 570,823.20 = 144,028.80 : x
  2. Step 2: Convert to fraction form
    380,721.60/570,823.20 = 144,028.80/x
  3. Step 3: Cross multiply
    380,721.60x = 570,823.20 × 144,028.80
  4. Step 4: Simplify right side
    380,721.60x = 82,214,980,508.16
  5. Step 5: Solve for x
    x = 82,214,980,508.16/380,721.60
  6. Step 6: Final answer
    x = 215,945.14

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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.