Home / 289,890.39-434,965.05-112,411.29

Finding the Fourth Proportional to 289,890.39, 434,965.05 and 112,411.29

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Solution

The fourth proportional to 289,890.39, 434,965.05 and 112,411.29 is: 168,667.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,890.39 : 434,965.05 = 112,411.29 : x
  2. Step 2: Convert to fraction form
    289,890.39/434,965.05 = 112,411.29/x
  3. Step 3: Cross multiply
    289,890.39x = 434,965.05 × 112,411.29
  4. Step 4: Simplify right side
    289,890.39x = 48,894,982,375.41
  5. Step 5: Solve for x
    x = 48,894,982,375.41/289,890.39
  6. Step 6: Final answer
    x = 168,667.14

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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.