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Finding the Fourth Proportional to 400,641.73, 552,864.58 and 219,318.93

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Solution

The fourth proportional to 400,641.73, 552,864.58 and 219,318.93 is: 302,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,641.73 : 552,864.58 = 219,318.93 : x
  2. Step 2: Convert to fraction form
    400,641.73/552,864.58 = 219,318.93/x
  3. Step 3: Cross multiply
    400,641.73x = 552,864.58 × 219,318.93
  4. Step 4: Simplify right side
    400,641.73x = 121,253,667,572.20
  5. Step 5: Solve for x
    x = 121,253,667,572.20/400,641.73
  6. Step 6: Final answer
    x = 302,648.62

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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.