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Finding the Fourth Proportional to 343,680.29, 515,565.66 and 127,509.58

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Solution

The fourth proportional to 343,680.29, 515,565.66 and 127,509.58 is: 191,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,680.29 : 515,565.66 = 127,509.58 : x
  2. Step 2: Convert to fraction form
    343,680.29/515,565.66 = 127,509.58/x
  3. Step 3: Cross multiply
    343,680.29x = 515,565.66 × 127,509.58
  4. Step 4: Simplify right side
    343,680.29x = 65,739,558,991.58
  5. Step 5: Solve for x
    x = 65,739,558,991.58/343,680.29
  6. Step 6: Final answer
    x = 191,281.14

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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.