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Finding the Fourth Proportional to 280,727.30, 421,374.80 and 248,910.10

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Solution

The fourth proportional to 280,727.30, 421,374.80 and 248,910.10 is: 373,616.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,727.30 : 421,374.80 = 248,910.10 : x
  2. Step 2: Convert to fraction form
    280,727.30/421,374.80 = 248,910.10/x
  3. Step 3: Cross multiply
    280,727.30x = 421,374.80 × 248,910.10
  4. Step 4: Simplify right side
    280,727.30x = 104,884,443,174.32
  5. Step 5: Solve for x
    x = 104,884,443,174.32/280,727.30
  6. Step 6: Final answer
    x = 373,616.82

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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.