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Finding the Fourth Proportional to 326,347.92, 489,527.28 and 89,689.14

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Solution

The fourth proportional to 326,347.92, 489,527.28 and 89,689.14 is: 134,535.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,347.92 : 489,527.28 = 89,689.14 : x
  2. Step 2: Convert to fraction form
    326,347.92/489,527.28 = 89,689.14/x
  3. Step 3: Cross multiply
    326,347.92x = 489,527.28 × 89,689.14
  4. Step 4: Simplify right side
    326,347.92x = 43,905,280,749.74
  5. Step 5: Solve for x
    x = 43,905,280,749.74/326,347.92
  6. Step 6: Final answer
    x = 134,535.19

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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.