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Finding the Fourth Proportional to 403,642, 557,026.14 and 233,974.54

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Solution

The fourth proportional to 403,642, 557,026.14 and 233,974.54 is: 322,884.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,642 : 557,026.14 = 233,974.54 : x
  2. Step 2: Convert to fraction form
    403,642/557,026.14 = 233,974.54/x
  3. Step 3: Cross multiply
    403,642x = 557,026.14 × 233,974.54
  4. Step 4: Simplify right side
    403,642x = 130,329,934,874.48
  5. Step 5: Solve for x
    x = 130,329,934,874.48/403,642
  6. Step 6: Final answer
    x = 322,884.97

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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.