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Finding the Fourth Proportional to 326,361.16, 489,430.86 and 113,079.28

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Solution

The fourth proportional to 326,361.16, 489,430.86 and 113,079.28 is: 169,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,361.16 : 489,430.86 = 113,079.28 : x
  2. Step 2: Convert to fraction form
    326,361.16/489,430.86 = 113,079.28/x
  3. Step 3: Cross multiply
    326,361.16x = 489,430.86 × 113,079.28
  4. Step 4: Simplify right side
    326,361.16x = 55,344,489,258.58
  5. Step 5: Solve for x
    x = 55,344,489,258.58/326,361.16
  6. Step 6: Final answer
    x = 169,580.50

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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.