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Finding the Fourth Proportional to 613,289.34, 920,054.40 and 213,943.14

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Solution

The fourth proportional to 613,289.34, 920,054.40 and 213,943.14 is: 320,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,289.34 : 920,054.40 = 213,943.14 : x
  2. Step 2: Convert to fraction form
    613,289.34/920,054.40 = 213,943.14/x
  3. Step 3: Cross multiply
    613,289.34x = 920,054.40 × 213,943.14
  4. Step 4: Simplify right side
    613,289.34x = 196,839,327,306.82
  5. Step 5: Solve for x
    x = 196,839,327,306.82/613,289.34
  6. Step 6: Final answer
    x = 320,956.71

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Similar ratio
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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.