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Finding the Fourth Proportional to 229,069.62, 316,176.21 and 128,500.02

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Solution

The fourth proportional to 229,069.62, 316,176.21 and 128,500.02 is: 177,363.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,069.62 : 316,176.21 = 128,500.02 : x
  2. Step 2: Convert to fraction form
    229,069.62/316,176.21 = 128,500.02/x
  3. Step 3: Cross multiply
    229,069.62x = 316,176.21 × 128,500.02
  4. Step 4: Simplify right side
    229,069.62x = 40,628,649,308.52
  5. Step 5: Solve for x
    x = 40,628,649,308.52/229,069.62
  6. Step 6: Final answer
    x = 177,363.76

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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.