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Finding the Fourth Proportional to 215,277.32, 322,912.74 and 65,511.56

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Solution

The fourth proportional to 215,277.32, 322,912.74 and 65,511.56 is: 98,266.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,277.32 : 322,912.74 = 65,511.56 : x
  2. Step 2: Convert to fraction form
    215,277.32/322,912.74 = 65,511.56/x
  3. Step 3: Cross multiply
    215,277.32x = 322,912.74 × 65,511.56
  4. Step 4: Simplify right side
    215,277.32x = 21,154,517,341.27
  5. Step 5: Solve for x
    x = 21,154,517,341.27/215,277.32
  6. Step 6: Final answer
    x = 98,266.35

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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.