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Finding the Fourth Proportional to 400,956, 553,319.28 and 222,108

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Solution

The fourth proportional to 400,956, 553,319.28 and 222,108 is: 306,509.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,956 : 553,319.28 = 222,108 : x
  2. Step 2: Convert to fraction form
    400,956/553,319.28 = 222,108/x
  3. Step 3: Cross multiply
    400,956x = 553,319.28 × 222,108
  4. Step 4: Simplify right side
    400,956x = 122,896,638,642.24
  5. Step 5: Solve for x
    x = 122,896,638,642.24/400,956
  6. Step 6: Final answer
    x = 306,509.04

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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.