Home / 217,964.52-326,430.08-138,838.86

Finding the Fourth Proportional to 217,964.52, 326,430.08 and 138,838.86

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Solution

The fourth proportional to 217,964.52, 326,430.08 and 138,838.86 is: 207,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,964.52 : 326,430.08 = 138,838.86 : x
  2. Step 2: Convert to fraction form
    217,964.52/326,430.08 = 138,838.86/x
  3. Step 3: Cross multiply
    217,964.52x = 326,430.08 × 138,838.86
  4. Step 4: Simplify right side
    217,964.52x = 45,321,180,176.91
  5. Step 5: Solve for x
    x = 45,321,180,176.91/217,964.52
  6. Step 6: Final answer
    x = 207,929.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.