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Finding the Fourth Proportional to 474,820.38, 655,248.06 and 257,028

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Solution

The fourth proportional to 474,820.38, 655,248.06 and 257,028 is: 354,696.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,820.38 : 655,248.06 = 257,028 : x
  2. Step 2: Convert to fraction form
    474,820.38/655,248.06 = 257,028/x
  3. Step 3: Cross multiply
    474,820.38x = 655,248.06 × 257,028
  4. Step 4: Simplify right side
    474,820.38x = 168,417,098,365.68
  5. Step 5: Solve for x
    x = 168,417,098,365.68/474,820.38
  6. Step 6: Final answer
    x = 354,696.44

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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.