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Finding the Fourth Proportional to 230,655.78, 345,981.60 and 72,884.25

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Solution

The fourth proportional to 230,655.78, 345,981.60 and 72,884.25 is: 109,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,655.78 : 345,981.60 = 72,884.25 : x
  2. Step 2: Convert to fraction form
    230,655.78/345,981.60 = 72,884.25/x
  3. Step 3: Cross multiply
    230,655.78x = 345,981.60 × 72,884.25
  4. Step 4: Simplify right side
    230,655.78x = 25,216,609,429.80
  5. Step 5: Solve for x
    x = 25,216,609,429.80/230,655.78
  6. Step 6: Final answer
    x = 109,325.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.