Home / 208,823.28-313,221.96-90,412.08

Finding the Fourth Proportional to 208,823.28, 313,221.96 and 90,412.08

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Solution

The fourth proportional to 208,823.28, 313,221.96 and 90,412.08 is: 135,612.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,823.28 : 313,221.96 = 90,412.08 : x
  2. Step 2: Convert to fraction form
    208,823.28/313,221.96 = 90,412.08/x
  3. Step 3: Cross multiply
    208,823.28x = 313,221.96 × 90,412.08
  4. Step 4: Simplify right side
    208,823.28x = 28,319,048,905.28
  5. Step 5: Solve for x
    x = 28,319,048,905.28/208,823.28
  6. Step 6: Final answer
    x = 135,612.51

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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.