Home / 328,034.20-491,984.10-91,317.40

Finding the Fourth Proportional to 328,034.20, 491,984.10 and 91,317.40

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Solution

The fourth proportional to 328,034.20, 491,984.10 and 91,317.40 is: 136,957.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,034.20 : 491,984.10 = 91,317.40 : x
  2. Step 2: Convert to fraction form
    328,034.20/491,984.10 = 91,317.40/x
  3. Step 3: Cross multiply
    328,034.20x = 491,984.10 × 91,317.40
  4. Step 4: Simplify right side
    328,034.20x = 44,926,708,853.34
  5. Step 5: Solve for x
    x = 44,926,708,853.34/328,034.20
  6. Step 6: Final answer
    x = 136,957.39

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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.