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Finding the Fourth Proportional to 326,275.34, 489,436.32 and 136,544.66

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Solution

The fourth proportional to 326,275.34, 489,436.32 and 136,544.66 is: 204,826.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,275.34 : 489,436.32 = 136,544.66 : x
  2. Step 2: Convert to fraction form
    326,275.34/489,436.32 = 136,544.66/x
  3. Step 3: Cross multiply
    326,275.34x = 489,436.32 × 136,544.66
  4. Step 4: Simplify right side
    326,275.34x = 66,829,917,182.84
  5. Step 5: Solve for x
    x = 66,829,917,182.84/326,275.34
  6. Step 6: Final answer
    x = 204,826.75

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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.