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Finding the Fourth Proportional to 309,652.52, 427,325.46 and 173,716.72

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Solution

The fourth proportional to 309,652.52, 427,325.46 and 173,716.72 is: 239,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,652.52 : 427,325.46 = 173,716.72 : x
  2. Step 2: Convert to fraction form
    309,652.52/427,325.46 = 173,716.72/x
  3. Step 3: Cross multiply
    309,652.52x = 427,325.46 × 173,716.72
  4. Step 4: Simplify right side
    309,652.52x = 74,233,577,283.69
  5. Step 5: Solve for x
    x = 74,233,577,283.69/309,652.52
  6. Step 6: Final answer
    x = 239,731.87

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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.