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Finding the Fourth Proportional to 385,266.60, 577,122.30 and 218,860.20

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Solution

The fourth proportional to 385,266.60, 577,122.30 and 218,860.20 is: 327,848.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,266.60 : 577,122.30 = 218,860.20 : x
  2. Step 2: Convert to fraction form
    385,266.60/577,122.30 = 218,860.20/x
  3. Step 3: Cross multiply
    385,266.60x = 577,122.30 × 218,860.20
  4. Step 4: Simplify right side
    385,266.60x = 126,309,102,002.46
  5. Step 5: Solve for x
    x = 126,309,102,002.46/385,266.60
  6. Step 6: Final answer
    x = 327,848.57

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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.