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Finding the Fourth Proportional to 243,390.20, 365,057.63 and 65,911.05

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Solution

The fourth proportional to 243,390.20, 365,057.63 and 65,911.05 is: 98,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,390.20 : 365,057.63 = 65,911.05 : x
  2. Step 2: Convert to fraction form
    243,390.20/365,057.63 = 65,911.05/x
  3. Step 3: Cross multiply
    243,390.20x = 365,057.63 × 65,911.05
  4. Step 4: Simplify right side
    243,390.20x = 24,061,333,115.16
  5. Step 5: Solve for x
    x = 24,061,333,115.16/243,390.20
  6. Step 6: Final answer
    x = 98,859.09

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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.