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Finding the Fourth Proportional to 526,576.80, 788,698.80 and 210,871.20

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Solution

The fourth proportional to 526,576.80, 788,698.80 and 210,871.20 is: 315,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,576.80 : 788,698.80 = 210,871.20 : x
  2. Step 2: Convert to fraction form
    526,576.80/788,698.80 = 210,871.20/x
  3. Step 3: Cross multiply
    526,576.80x = 788,698.80 × 210,871.20
  4. Step 4: Simplify right side
    526,576.80x = 166,313,862,394.56
  5. Step 5: Solve for x
    x = 166,313,862,394.56/526,576.80
  6. Step 6: Final answer
    x = 315,839.71

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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.