Home / 326,534.15-489,990.40-136,977.75

Finding the Fourth Proportional to 326,534.15, 489,990.40 and 136,977.75

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Solution

The fourth proportional to 326,534.15, 489,990.40 and 136,977.75 is: 205,545.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,534.15 : 489,990.40 = 136,977.75 : x
  2. Step 2: Convert to fraction form
    326,534.15/489,990.40 = 136,977.75/x
  3. Step 3: Cross multiply
    326,534.15x = 489,990.40 × 136,977.75
  4. Step 4: Simplify right side
    326,534.15x = 67,117,782,171.16
  5. Step 5: Solve for x
    x = 67,117,782,171.16/326,534.15
  6. Step 6: Final answer
    x = 205,545.98

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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.