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Finding the Fourth Proportional to 220,234.68, 330,401.25 and 70,483.95

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Solution

The fourth proportional to 220,234.68, 330,401.25 and 70,483.95 is: 105,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,234.68 : 330,401.25 = 70,483.95 : x
  2. Step 2: Convert to fraction form
    220,234.68/330,401.25 = 70,483.95/x
  3. Step 3: Cross multiply
    220,234.68x = 330,401.25 × 70,483.95
  4. Step 4: Simplify right side
    220,234.68x = 23,287,985,184.94
  5. Step 5: Solve for x
    x = 23,287,985,184.94/220,234.68
  6. Step 6: Final answer
    x = 105,741.68

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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.