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Finding the Fourth Proportional to 448,672.32, 619,146 and 267,380.28

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Solution

The fourth proportional to 448,672.32, 619,146 and 267,380.28 is: 368,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,672.32 : 619,146 = 267,380.28 : x
  2. Step 2: Convert to fraction form
    448,672.32/619,146 = 267,380.28/x
  3. Step 3: Cross multiply
    448,672.32x = 619,146 × 267,380.28
  4. Step 4: Simplify right side
    448,672.32x = 165,547,430,840.88
  5. Step 5: Solve for x
    x = 165,547,430,840.88/448,672.32
  6. Step 6: Final answer
    x = 368,971.79

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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.