Home / 205,082.30-307,623.45-155,315.90

Finding the Fourth Proportional to 205,082.30, 307,623.45 and 155,315.90

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Solution

The fourth proportional to 205,082.30, 307,623.45 and 155,315.90 is: 232,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,082.30 : 307,623.45 = 155,315.90 : x
  2. Step 2: Convert to fraction form
    205,082.30/307,623.45 = 155,315.90/x
  3. Step 3: Cross multiply
    205,082.30x = 307,623.45 × 155,315.90
  4. Step 4: Simplify right side
    205,082.30x = 47,778,812,997.86
  5. Step 5: Solve for x
    x = 47,778,812,997.86/205,082.30
  6. Step 6: Final answer
    x = 232,973.85

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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.