Home / 289,715.90-434,617.05-102,712.70

Finding the Fourth Proportional to 289,715.90, 434,617.05 and 102,712.70

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Solution

The fourth proportional to 289,715.90, 434,617.05 and 102,712.70 is: 154,084.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,715.90 : 434,617.05 = 102,712.70 : x
  2. Step 2: Convert to fraction form
    289,715.90/434,617.05 = 102,712.70/x
  3. Step 3: Cross multiply
    289,715.90x = 434,617.05 × 102,712.70
  4. Step 4: Simplify right side
    289,715.90x = 44,640,690,671.54
  5. Step 5: Solve for x
    x = 44,640,690,671.54/289,715.90
  6. Step 6: Final answer
    x = 154,084.37

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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.