Home / 224,321.96-309,612.21-128,881.28

Finding the Fourth Proportional to 224,321.96, 309,612.21 and 128,881.28

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Solution

The fourth proportional to 224,321.96, 309,612.21 and 128,881.28 is: 177,883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,321.96 : 309,612.21 = 128,881.28 : x
  2. Step 2: Convert to fraction form
    224,321.96/309,612.21 = 128,881.28/x
  3. Step 3: Cross multiply
    224,321.96x = 309,612.21 × 128,881.28
  4. Step 4: Simplify right side
    224,321.96x = 39,903,215,735.96
  5. Step 5: Solve for x
    x = 39,903,215,735.96/224,321.96
  6. Step 6: Final answer
    x = 177,883.68

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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.