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Finding the Fourth Proportional to 217,388.85, 299,649.92 and 171,373.47

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Solution

The fourth proportional to 217,388.85, 299,649.92 and 171,373.47 is: 236,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,388.85 : 299,649.92 = 171,373.47 : x
  2. Step 2: Convert to fraction form
    217,388.85/299,649.92 = 171,373.47/x
  3. Step 3: Cross multiply
    217,388.85x = 299,649.92 × 171,373.47
  4. Step 4: Simplify right side
    217,388.85x = 51,352,045,718.76
  5. Step 5: Solve for x
    x = 51,352,045,718.76/217,388.85
  6. Step 6: Final answer
    x = 236,222.08

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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.