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Finding the Fourth Proportional to 230,599.50, 318,489.75 and 155,016.78

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Solution

The fourth proportional to 230,599.50, 318,489.75 and 155,016.78 is: 214,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,599.50 : 318,489.75 = 155,016.78 : x
  2. Step 2: Convert to fraction form
    230,599.50/318,489.75 = 155,016.78/x
  3. Step 3: Cross multiply
    230,599.50x = 318,489.75 × 155,016.78
  4. Step 4: Simplify right side
    230,599.50x = 49,371,255,508.01
  5. Step 5: Solve for x
    x = 49,371,255,508.01/230,599.50
  6. Step 6: Final answer
    x = 214,099.58

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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.