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Finding the Fourth Proportional to 400,718.52, 552,992.49 and 219,442.32

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Solution

The fourth proportional to 400,718.52, 552,992.49 and 219,442.32 is: 302,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,718.52 : 552,992.49 = 219,442.32 : x
  2. Step 2: Convert to fraction form
    400,718.52/552,992.49 = 219,442.32/x
  3. Step 3: Cross multiply
    400,718.52x = 552,992.49 × 219,442.32
  4. Step 4: Simplify right side
    400,718.52x = 121,349,954,948.18
  5. Step 5: Solve for x
    x = 121,349,954,948.18/400,718.52
  6. Step 6: Final answer
    x = 302,830.91

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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.