Home / 442,927.20-664,455.60-143,356.80

Finding the Fourth Proportional to 442,927.20, 664,455.60 and 143,356.80

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Solution

The fourth proportional to 442,927.20, 664,455.60 and 143,356.80 is: 215,056.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,927.20 : 664,455.60 = 143,356.80 : x
  2. Step 2: Convert to fraction form
    442,927.20/664,455.60 = 143,356.80/x
  3. Step 3: Cross multiply
    442,927.20x = 664,455.60 × 143,356.80
  4. Step 4: Simplify right side
    442,927.20x = 95,254,228,558.08
  5. Step 5: Solve for x
    x = 95,254,228,558.08/442,927.20
  6. Step 6: Final answer
    x = 215,056.17

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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.