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Finding the Fourth Proportional to 229,399.13, 316,570.80 and 128,797.13

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Solution

The fourth proportional to 229,399.13, 316,570.80 and 128,797.13 is: 177,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,399.13 : 316,570.80 = 128,797.13 : x
  2. Step 2: Convert to fraction form
    229,399.13/316,570.80 = 128,797.13/x
  3. Step 3: Cross multiply
    229,399.13x = 316,570.80 × 128,797.13
  4. Step 4: Simplify right side
    229,399.13x = 40,773,408,898.95
  5. Step 5: Solve for x
    x = 40,773,408,898.95/229,399.13
  6. Step 6: Final answer
    x = 177,740.04

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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.