Home / 458,206.32-687,033.12-205,440.96

Finding the Fourth Proportional to 458,206.32, 687,033.12 and 205,440.96

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Solution

The fourth proportional to 458,206.32, 687,033.12 and 205,440.96 is: 308,037.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,206.32 : 687,033.12 = 205,440.96 : x
  2. Step 2: Convert to fraction form
    458,206.32/687,033.12 = 205,440.96/x
  3. Step 3: Cross multiply
    458,206.32x = 687,033.12 × 205,440.96
  4. Step 4: Simplify right side
    458,206.32x = 141,144,743,724.60
  5. Step 5: Solve for x
    x = 141,144,743,724.60/458,206.32
  6. Step 6: Final answer
    x = 308,037.53

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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.