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Finding the Fourth Proportional to 230,548.85, 318,156.78 and 128,574.42

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Solution

The fourth proportional to 230,548.85, 318,156.78 and 128,574.42 is: 177,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,548.85 : 318,156.78 = 128,574.42 : x
  2. Step 2: Convert to fraction form
    230,548.85/318,156.78 = 128,574.42/x
  3. Step 3: Cross multiply
    230,548.85x = 318,156.78 × 128,574.42
  4. Step 4: Simplify right side
    230,548.85x = 40,906,823,457.57
  5. Step 5: Solve for x
    x = 40,906,823,457.57/230,548.85
  6. Step 6: Final answer
    x = 177,432.35

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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.