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Finding the Fourth Proportional to 230,743.40, 318,425.58 and 130,141.40

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Solution

The fourth proportional to 230,743.40, 318,425.58 and 130,141.40 is: 179,594.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,743.40 : 318,425.58 = 130,141.40 : x
  2. Step 2: Convert to fraction form
    230,743.40/318,425.58 = 130,141.40/x
  3. Step 3: Cross multiply
    230,743.40x = 318,425.58 × 130,141.40
  4. Step 4: Simplify right side
    230,743.40x = 41,440,350,777.01
  5. Step 5: Solve for x
    x = 41,440,350,777.01/230,743.40
  6. Step 6: Final answer
    x = 179,594.96

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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.