Home / 289,301.50-434,021.52-120,728.04

Finding the Fourth Proportional to 289,301.50, 434,021.52 and 120,728.04

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Solution

The fourth proportional to 289,301.50, 434,021.52 and 120,728.04 is: 181,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,301.50 : 434,021.52 = 120,728.04 : x
  2. Step 2: Convert to fraction form
    289,301.50/434,021.52 = 120,728.04/x
  3. Step 3: Cross multiply
    289,301.50x = 434,021.52 × 120,728.04
  4. Step 4: Simplify right side
    289,301.50x = 52,398,567,427.42
  5. Step 5: Solve for x
    x = 52,398,567,427.42/289,301.50
  6. Step 6: Final answer
    x = 181,120.97

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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.