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Finding the Fourth Proportional to 235,179.72, 324,497.34 and 139,718.52

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Solution

The fourth proportional to 235,179.72, 324,497.34 and 139,718.52 is: 192,781.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,179.72 : 324,497.34 = 139,718.52 : x
  2. Step 2: Convert to fraction form
    235,179.72/324,497.34 = 139,718.52/x
  3. Step 3: Cross multiply
    235,179.72x = 324,497.34 × 139,718.52
  4. Step 4: Simplify right side
    235,179.72x = 45,338,288,088.74
  5. Step 5: Solve for x
    x = 45,338,288,088.74/235,179.72
  6. Step 6: Final answer
    x = 192,781.45

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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.