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Finding the Fourth Proportional to 219,718.64, 303,219.88 and 124,219.64

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Solution

The fourth proportional to 219,718.64, 303,219.88 and 124,219.64 is: 171,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,718.64 : 303,219.88 = 124,219.64 : x
  2. Step 2: Convert to fraction form
    219,718.64/303,219.88 = 124,219.64/x
  3. Step 3: Cross multiply
    219,718.64x = 303,219.88 × 124,219.64
  4. Step 4: Simplify right side
    219,718.64x = 37,665,862,818.34
  5. Step 5: Solve for x
    x = 37,665,862,818.34/219,718.64
  6. Step 6: Final answer
    x = 171,427.71

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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.