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Finding the Fourth Proportional to 511,191.40, 766,211.10 and 245,079.40

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Solution

The fourth proportional to 511,191.40, 766,211.10 and 245,079.40 is: 367,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,191.40 : 766,211.10 = 245,079.40 : x
  2. Step 2: Convert to fraction form
    511,191.40/766,211.10 = 245,079.40/x
  3. Step 3: Cross multiply
    511,191.40x = 766,211.10 × 245,079.40
  4. Step 4: Simplify right side
    511,191.40x = 187,782,556,661.34
  5. Step 5: Solve for x
    x = 187,782,556,661.34/511,191.40
  6. Step 6: Final answer
    x = 367,342.95

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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.