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Finding the Fourth Proportional to 243,713.70, 365,570.55 and 212,609.70

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Solution

The fourth proportional to 243,713.70, 365,570.55 and 212,609.70 is: 318,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,713.70 : 365,570.55 = 212,609.70 : x
  2. Step 2: Convert to fraction form
    243,713.70/365,570.55 = 212,609.70/x
  3. Step 3: Cross multiply
    243,713.70x = 365,570.55 × 212,609.70
  4. Step 4: Simplify right side
    243,713.70x = 77,723,844,964.34
  5. Step 5: Solve for x
    x = 77,723,844,964.34/243,713.70
  6. Step 6: Final answer
    x = 318,914.55

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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.