Home / 289,719.10-434,578.65-268,723.90

Finding the Fourth Proportional to 289,719.10, 434,578.65 and 268,723.90

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Solution

The fourth proportional to 289,719.10, 434,578.65 and 268,723.90 is: 403,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,719.10 : 434,578.65 = 268,723.90 : x
  2. Step 2: Convert to fraction form
    289,719.10/434,578.65 = 268,723.90/x
  3. Step 3: Cross multiply
    289,719.10x = 434,578.65 × 268,723.90
  4. Step 4: Simplify right side
    289,719.10x = 116,781,669,684.74
  5. Step 5: Solve for x
    x = 116,781,669,684.74/289,719.10
  6. Step 6: Final answer
    x = 403,085.85

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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.