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Finding the Fourth Proportional to 266,063.80, 399,095.70 and 248,438.20

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Solution

The fourth proportional to 266,063.80, 399,095.70 and 248,438.20 is: 372,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,063.80 : 399,095.70 = 248,438.20 : x
  2. Step 2: Convert to fraction form
    266,063.80/399,095.70 = 248,438.20/x
  3. Step 3: Cross multiply
    266,063.80x = 399,095.70 × 248,438.20
  4. Step 4: Simplify right side
    266,063.80x = 99,150,617,335.74
  5. Step 5: Solve for x
    x = 99,150,617,335.74/266,063.80
  6. Step 6: Final answer
    x = 372,657.30

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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.