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Finding the Fourth Proportional to 587,173.80, 881,106.30 and 213,148.20

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Solution

The fourth proportional to 587,173.80, 881,106.30 and 213,148.20 is: 319,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,173.80 : 881,106.30 = 213,148.20 : x
  2. Step 2: Convert to fraction form
    587,173.80/881,106.30 = 213,148.20/x
  3. Step 3: Cross multiply
    587,173.80x = 881,106.30 × 213,148.20
  4. Step 4: Simplify right side
    587,173.80x = 187,806,221,853.66
  5. Step 5: Solve for x
    x = 187,806,221,853.66/587,173.80
  6. Step 6: Final answer
    x = 319,847.76

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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.