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Finding the Fourth Proportional to 243,741.70, 365,612.55 and 212,637.70

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Solution

The fourth proportional to 243,741.70, 365,612.55 and 212,637.70 is: 318,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,741.70 : 365,612.55 = 212,637.70 : x
  2. Step 2: Convert to fraction form
    243,741.70/365,612.55 = 212,637.70/x
  3. Step 3: Cross multiply
    243,741.70x = 365,612.55 × 212,637.70
  4. Step 4: Simplify right side
    243,741.70x = 77,743,011,723.14
  5. Step 5: Solve for x
    x = 77,743,011,723.14/243,741.70
  6. Step 6: Final answer
    x = 318,956.55

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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.