Home / 224,135.73-309,288.65-128,622.15

Finding the Fourth Proportional to 224,135.73, 309,288.65 and 128,622.15

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Solution

The fourth proportional to 224,135.73, 309,288.65 and 128,622.15 is: 177,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,135.73 : 309,288.65 = 128,622.15 : x
  2. Step 2: Convert to fraction form
    224,135.73/309,288.65 = 128,622.15/x
  3. Step 3: Cross multiply
    224,135.73x = 309,288.65 × 128,622.15
  4. Step 4: Simplify right side
    224,135.73x = 39,781,370,490.49
  5. Step 5: Solve for x
    x = 39,781,370,490.49/224,135.73
  6. Step 6: Final answer
    x = 177,487.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.