Home / 260,263.89-390,390.44-82,771.29

Finding the Fourth Proportional to 260,263.89, 390,390.44 and 82,771.29

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Solution

The fourth proportional to 260,263.89, 390,390.44 and 82,771.29 is: 124,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,263.89 : 390,390.44 = 82,771.29 : x
  2. Step 2: Convert to fraction form
    260,263.89/390,390.44 = 82,771.29/x
  3. Step 3: Cross multiply
    260,263.89x = 390,390.44 × 82,771.29
  4. Step 4: Simplify right side
    260,263.89x = 32,313,119,908.61
  5. Step 5: Solve for x
    x = 32,313,119,908.61/260,263.89
  6. Step 6: Final answer
    x = 124,155.22

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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.