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Finding the Fourth Proportional to 403,838.40, 557,294.40 and 222,551.76

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Solution

The fourth proportional to 403,838.40, 557,294.40 and 222,551.76 is: 307,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,838.40 : 557,294.40 = 222,551.76 : x
  2. Step 2: Convert to fraction form
    403,838.40/557,294.40 = 222,551.76/x
  3. Step 3: Cross multiply
    403,838.40x = 557,294.40 × 222,551.76
  4. Step 4: Simplify right side
    403,838.40x = 124,026,849,558.14
  5. Step 5: Solve for x
    x = 124,026,849,558.14/403,838.40
  6. Step 6: Final answer
    x = 307,120.00

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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.