Home / 380,900.90-571,390.24-131,550.50

Finding the Fourth Proportional to 380,900.90, 571,390.24 and 131,550.50

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Solution

The fourth proportional to 380,900.90, 571,390.24 and 131,550.50 is: 197,339.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,900.90 : 571,390.24 = 131,550.50 : x
  2. Step 2: Convert to fraction form
    380,900.90/571,390.24 = 131,550.50/x
  3. Step 3: Cross multiply
    380,900.90x = 571,390.24 × 131,550.50
  4. Step 4: Simplify right side
    380,900.90x = 75,166,671,767.12
  5. Step 5: Solve for x
    x = 75,166,671,767.12/380,900.90
  6. Step 6: Final answer
    x = 197,339.18

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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.