Home / 293,515.40-440,420.81-218,785.61

Finding the Fourth Proportional to 293,515.40, 440,420.81 and 218,785.61

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Solution

The fourth proportional to 293,515.40, 440,420.81 and 218,785.61 is: 328,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,515.40 : 440,420.81 = 218,785.61 : x
  2. Step 2: Convert to fraction form
    293,515.40/440,420.81 = 218,785.61/x
  3. Step 3: Cross multiply
    293,515.40x = 440,420.81 × 218,785.61
  4. Step 4: Simplify right side
    293,515.40x = 96,357,735,572.54
  5. Step 5: Solve for x
    x = 96,357,735,572.54/293,515.40
  6. Step 6: Final answer
    x = 328,288.52

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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.