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Finding the Fourth Proportional to 328,501.28, 453,404.32 and 213,579.92

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Solution

The fourth proportional to 328,501.28, 453,404.32 and 213,579.92 is: 294,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,501.28 : 453,404.32 = 213,579.92 : x
  2. Step 2: Convert to fraction form
    328,501.28/453,404.32 = 213,579.92/x
  3. Step 3: Cross multiply
    328,501.28x = 453,404.32 × 213,579.92
  4. Step 4: Simplify right side
    328,501.28x = 96,838,058,393.25
  5. Step 5: Solve for x
    x = 96,838,058,393.25/328,501.28
  6. Step 6: Final answer
    x = 294,787.46

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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.