Home / 326,369.28-489,577.32-136,638.72

Finding the Fourth Proportional to 326,369.28, 489,577.32 and 136,638.72

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Solution

The fourth proportional to 326,369.28, 489,577.32 and 136,638.72 is: 204,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,369.28 : 489,577.32 = 136,638.72 : x
  2. Step 2: Convert to fraction form
    326,369.28/489,577.32 = 136,638.72/x
  3. Step 3: Cross multiply
    326,369.28x = 489,577.32 × 136,638.72
  4. Step 4: Simplify right side
    326,369.28x = 66,895,218,345.83
  5. Step 5: Solve for x
    x = 66,895,218,345.83/326,369.28
  6. Step 6: Final answer
    x = 204,967.88

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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.