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Finding the Fourth Proportional to 400,864.44, 553,171.32 and 219,541.98

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Solution

The fourth proportional to 400,864.44, 553,171.32 and 219,541.98 is: 302,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,864.44 : 553,171.32 = 219,541.98 : x
  2. Step 2: Convert to fraction form
    400,864.44/553,171.32 = 219,541.98/x
  3. Step 3: Cross multiply
    400,864.44x = 553,171.32 × 219,541.98
  4. Step 4: Simplify right side
    400,864.44x = 121,444,326,872.01
  5. Step 5: Solve for x
    x = 121,444,326,872.01/400,864.44
  6. Step 6: Final answer
    x = 302,956.10

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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.