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Finding the Fourth Proportional to 243,906.72, 365,969.16 and 155,137.20

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Solution

The fourth proportional to 243,906.72, 365,969.16 and 155,137.20 is: 232,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,906.72 : 365,969.16 = 155,137.20 : x
  2. Step 2: Convert to fraction form
    243,906.72/365,969.16 = 155,137.20/x
  3. Step 3: Cross multiply
    243,906.72x = 365,969.16 × 155,137.20
  4. Step 4: Simplify right side
    243,906.72x = 56,775,430,768.75
  5. Step 5: Solve for x
    x = 56,775,430,768.75/243,906.72
  6. Step 6: Final answer
    x = 232,775.18

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1.5x scale

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.