Home / 289,304.24-434,025.66-120,730.78

Finding the Fourth Proportional to 289,304.24, 434,025.66 and 120,730.78

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Solution

The fourth proportional to 289,304.24, 434,025.66 and 120,730.78 is: 181,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,304.24 : 434,025.66 = 120,730.78 : x
  2. Step 2: Convert to fraction form
    289,304.24/434,025.66 = 120,730.78/x
  3. Step 3: Cross multiply
    289,304.24x = 434,025.66 × 120,730.78
  4. Step 4: Simplify right side
    289,304.24x = 52,400,256,471.81
  5. Step 5: Solve for x
    x = 52,400,256,471.81/289,304.24
  6. Step 6: Final answer
    x = 181,125.09

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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.