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Finding the Fourth Proportional to 243,078.40, 365,006.40 and 164,540.80

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Solution

The fourth proportional to 243,078.40, 365,006.40 and 164,540.80 is: 247,074.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,078.40 : 365,006.40 = 164,540.80 : x
  2. Step 2: Convert to fraction form
    243,078.40/365,006.40 = 164,540.80/x
  3. Step 3: Cross multiply
    243,078.40x = 365,006.40 × 164,540.80
  4. Step 4: Simplify right side
    243,078.40x = 60,058,445,061.12
  5. Step 5: Solve for x
    x = 60,058,445,061.12/243,078.40
  6. Step 6: Final answer
    x = 247,074.38

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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.