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Finding the Fourth Proportional to 217,411.98, 300,031.62 and 131,359.02

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Solution

The fourth proportional to 217,411.98, 300,031.62 and 131,359.02 is: 181,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,411.98 : 300,031.62 = 131,359.02 : x
  2. Step 2: Convert to fraction form
    217,411.98/300,031.62 = 131,359.02/x
  3. Step 3: Cross multiply
    217,411.98x = 300,031.62 × 131,359.02
  4. Step 4: Simplify right side
    217,411.98x = 39,411,859,572.21
  5. Step 5: Solve for x
    x = 39,411,859,572.21/217,411.98
  6. Step 6: Final answer
    x = 181,277.31

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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.