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Finding the Fourth Proportional to 326,360.16, 489,446.16 and 89,710.56

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Solution

The fourth proportional to 326,360.16, 489,446.16 and 89,710.56 is: 134,539.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,360.16 : 489,446.16 = 89,710.56 : x
  2. Step 2: Convert to fraction form
    326,360.16/489,446.16 = 89,710.56/x
  3. Step 3: Cross multiply
    326,360.16x = 489,446.16 × 89,710.56
  4. Step 4: Simplify right side
    326,360.16x = 43,908,489,103.45
  5. Step 5: Solve for x
    x = 43,908,489,103.45/326,360.16
  6. Step 6: Final answer
    x = 134,539.98

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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.