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Finding the Fourth Proportional to 170,820.40, 256,230.60 and 137,605.35

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Solution

The fourth proportional to 170,820.40, 256,230.60 and 137,605.35 is: 206,408.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,820.40 : 256,230.60 = 137,605.35 : x
  2. Step 2: Convert to fraction form
    170,820.40/256,230.60 = 137,605.35/x
  3. Step 3: Cross multiply
    170,820.40x = 256,230.60 × 137,605.35
  4. Step 4: Simplify right side
    170,820.40x = 35,258,701,393.71
  5. Step 5: Solve for x
    x = 35,258,701,393.71/170,820.40
  6. Step 6: Final answer
    x = 206,408.03

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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.