Home / 290,864.28-435,849.30-172,299.72

Finding the Fourth Proportional to 290,864.28, 435,849.30 and 172,299.72

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Solution

The fourth proportional to 290,864.28, 435,849.30 and 172,299.72 is: 258,184.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,864.28 : 435,849.30 = 172,299.72 : x
  2. Step 2: Convert to fraction form
    290,864.28/435,849.30 = 172,299.72/x
  3. Step 3: Cross multiply
    290,864.28x = 435,849.30 × 172,299.72
  4. Step 4: Simplify right side
    290,864.28x = 75,096,712,352.20
  5. Step 5: Solve for x
    x = 75,096,712,352.20/290,864.28
  6. Step 6: Final answer
    x = 258,184.72

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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.