Home / 380,808.30-571,431.15-144,320.70

Finding the Fourth Proportional to 380,808.30, 571,431.15 and 144,320.70

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Solution

The fourth proportional to 380,808.30, 571,431.15 and 144,320.70 is: 216,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,808.30 : 571,431.15 = 144,320.70 : x
  2. Step 2: Convert to fraction form
    380,808.30/571,431.15 = 144,320.70/x
  3. Step 3: Cross multiply
    380,808.30x = 571,431.15 × 144,320.70
  4. Step 4: Simplify right side
    380,808.30x = 82,469,343,569.81
  5. Step 5: Solve for x
    x = 82,469,343,569.81/380,808.30
  6. Step 6: Final answer
    x = 216,563.93

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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.