Home / 293,721.72-440,583.02-72,105.72

Finding the Fourth Proportional to 293,721.72, 440,583.02 and 72,105.72

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Solution

The fourth proportional to 293,721.72, 440,583.02 and 72,105.72 is: 108,158.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,721.72 : 440,583.02 = 72,105.72 : x
  2. Step 2: Convert to fraction form
    293,721.72/440,583.02 = 72,105.72/x
  3. Step 3: Cross multiply
    293,721.72x = 440,583.02 × 72,105.72
  4. Step 4: Simplify right side
    293,721.72x = 31,768,555,876.87
  5. Step 5: Solve for x
    x = 31,768,555,876.87/293,721.72
  6. Step 6: Final answer
    x = 108,158.69

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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.