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Finding the Fourth Proportional to 217,910.52, 300,663.63 and 127,214.55

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Solution

The fourth proportional to 217,910.52, 300,663.63 and 127,214.55 is: 175,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,910.52 : 300,663.63 = 127,214.55 : x
  2. Step 2: Convert to fraction form
    217,910.52/300,663.63 = 127,214.55/x
  3. Step 3: Cross multiply
    217,910.52x = 300,663.63 × 127,214.55
  4. Step 4: Simplify right side
    217,910.52x = 38,248,788,391.82
  5. Step 5: Solve for x
    x = 38,248,788,391.82/217,910.52
  6. Step 6: Final answer
    x = 175,525.20

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1.5x scale

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.