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Finding the Fourth Proportional to 403,915.88, 557,428.26 and 222,627.56

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Solution

The fourth proportional to 403,915.88, 557,428.26 and 222,627.56 is: 307,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,915.88 : 557,428.26 = 222,627.56 : x
  2. Step 2: Convert to fraction form
    403,915.88/557,428.26 = 222,627.56/x
  3. Step 3: Cross multiply
    403,915.88x = 557,428.26 × 222,627.56
  4. Step 4: Simplify right side
    403,915.88x = 124,098,893,398.85
  5. Step 5: Solve for x
    x = 124,098,893,398.85/403,915.88
  6. Step 6: Final answer
    x = 307,239.45

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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.