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Finding the Fourth Proportional to 323,770.20, 485,655.30 and 245,038.20

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Solution

The fourth proportional to 323,770.20, 485,655.30 and 245,038.20 is: 367,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,770.20 : 485,655.30 = 245,038.20 : x
  2. Step 2: Convert to fraction form
    323,770.20/485,655.30 = 245,038.20/x
  3. Step 3: Cross multiply
    323,770.20x = 485,655.30 × 245,038.20
  4. Step 4: Simplify right side
    323,770.20x = 119,004,100,532.46
  5. Step 5: Solve for x
    x = 119,004,100,532.46/323,770.20
  6. Step 6: Final answer
    x = 367,557.30

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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.