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Finding the Fourth Proportional to 400,908, 553,254.12 and 222,060

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Solution

The fourth proportional to 400,908, 553,254.12 and 222,060 is: 306,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,908 : 553,254.12 = 222,060 : x
  2. Step 2: Convert to fraction form
    400,908/553,254.12 = 222,060/x
  3. Step 3: Cross multiply
    400,908x = 553,254.12 × 222,060
  4. Step 4: Simplify right side
    400,908x = 122,855,609,887.20
  5. Step 5: Solve for x
    x = 122,855,609,887.20/400,908
  6. Step 6: Final answer
    x = 306,443.40

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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.