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Finding the Fourth Proportional to 561,762.78, 842,769.05 and 262,079.88

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Solution

The fourth proportional to 561,762.78, 842,769.05 and 262,079.88 is: 393,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,762.78 : 842,769.05 = 262,079.88 : x
  2. Step 2: Convert to fraction form
    561,762.78/842,769.05 = 262,079.88/x
  3. Step 3: Cross multiply
    561,762.78x = 842,769.05 × 262,079.88
  4. Step 4: Simplify right side
    561,762.78x = 220,872,810,181.32
  5. Step 5: Solve for x
    x = 220,872,810,181.32/561,762.78
  6. Step 6: Final answer
    x = 393,178.08

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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.