Home / 289,294.24-434,010.64-120,720.78

Finding the Fourth Proportional to 289,294.24, 434,010.64 and 120,720.78

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Solution

The fourth proportional to 289,294.24, 434,010.64 and 120,720.78 is: 181,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,294.24 : 434,010.64 = 120,720.78 : x
  2. Step 2: Convert to fraction form
    289,294.24/434,010.64 = 120,720.78/x
  3. Step 3: Cross multiply
    289,294.24x = 434,010.64 × 120,720.78
  4. Step 4: Simplify right side
    289,294.24x = 52,394,102,989.10
  5. Step 5: Solve for x
    x = 52,394,102,989.10/289,294.24
  6. Step 6: Final answer
    x = 181,110.08

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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.