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Finding the Fourth Proportional to 229,224.96, 316,329.60 and 128,622.72

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Solution

The fourth proportional to 229,224.96, 316,329.60 and 128,622.72 is: 177,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,224.96 : 316,329.60 = 128,622.72 : x
  2. Step 2: Convert to fraction form
    229,224.96/316,329.60 = 128,622.72/x
  3. Step 3: Cross multiply
    229,224.96x = 316,329.60 × 128,622.72
  4. Step 4: Simplify right side
    229,224.96x = 40,687,173,568.51
  5. Step 5: Solve for x
    x = 40,687,173,568.51/229,224.96
  6. Step 6: Final answer
    x = 177,498.88

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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.