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Finding the Fourth Proportional to 293,709.15, 440,564.06 and 80,478.88

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Solution

The fourth proportional to 293,709.15, 440,564.06 and 80,478.88 is: 120,718.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,709.15 : 440,564.06 = 80,478.88 : x
  2. Step 2: Convert to fraction form
    293,709.15/440,564.06 = 80,478.88/x
  3. Step 3: Cross multiply
    293,709.15x = 440,564.06 × 80,478.88
  4. Step 4: Simplify right side
    293,709.15x = 35,456,101,216.84
  5. Step 5: Solve for x
    x = 35,456,101,216.84/293,709.15
  6. Step 6: Final answer
    x = 120,718.41

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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.