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Finding the Fourth Proportional to 229,230.96, 316,337.88 and 128,628.72

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Solution

The fourth proportional to 229,230.96, 316,337.88 and 128,628.72 is: 177,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,230.96 : 316,337.88 = 128,628.72 : x
  2. Step 2: Convert to fraction form
    229,230.96/316,337.88 = 128,628.72/x
  3. Step 3: Cross multiply
    229,230.96x = 316,337.88 × 128,628.72
  4. Step 4: Simplify right side
    229,230.96x = 40,690,136,591.91
  5. Step 5: Solve for x
    x = 40,690,136,591.91/229,230.96
  6. Step 6: Final answer
    x = 177,507.16

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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.