Home / 289,306.23-434,028.66-120,732.78

Finding the Fourth Proportional to 289,306.23, 434,028.66 and 120,732.78

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Solution

The fourth proportional to 289,306.23, 434,028.66 and 120,732.78 is: 181,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,306.23 : 434,028.66 = 120,732.78 : x
  2. Step 2: Convert to fraction form
    289,306.23/434,028.66 = 120,732.78/x
  3. Step 3: Cross multiply
    289,306.23x = 434,028.66 × 120,732.78
  4. Step 4: Simplify right side
    289,306.23x = 52,401,486,721.47
  5. Step 5: Solve for x
    x = 52,401,486,721.47/289,306.23
  6. Step 6: Final answer
    x = 181,128.10

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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.