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Finding the Fourth Proportional to 328,958.55, 493,437.83 and 210,860.55

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Solution

The fourth proportional to 328,958.55, 493,437.83 and 210,860.55 is: 316,290.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,958.55 : 493,437.83 = 210,860.55 : x
  2. Step 2: Convert to fraction form
    328,958.55/493,437.83 = 210,860.55/x
  3. Step 3: Cross multiply
    328,958.55x = 493,437.83 × 210,860.55
  4. Step 4: Simplify right side
    328,958.55x = 104,046,571,170.30
  5. Step 5: Solve for x
    x = 104,046,571,170.30/328,958.55
  6. Step 6: Final answer
    x = 316,290.83

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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.