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Finding the Fourth Proportional to 348,821.20, 523,231.80 and 248,437.90

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Solution

The fourth proportional to 348,821.20, 523,231.80 and 248,437.90 is: 372,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,821.20 : 523,231.80 = 248,437.90 : x
  2. Step 2: Convert to fraction form
    348,821.20/523,231.80 = 248,437.90/x
  3. Step 3: Cross multiply
    348,821.20x = 523,231.80 × 248,437.90
  4. Step 4: Simplify right side
    348,821.20x = 129,990,609,605.22
  5. Step 5: Solve for x
    x = 129,990,609,605.22/348,821.20
  6. Step 6: Final answer
    x = 372,656.85

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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.