Home / 389,968.98-538,168.23-220,228.62

Finding the Fourth Proportional to 389,968.98, 538,168.23 and 220,228.62

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Solution

The fourth proportional to 389,968.98, 538,168.23 and 220,228.62 is: 303,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,968.98 : 538,168.23 = 220,228.62 : x
  2. Step 2: Convert to fraction form
    389,968.98/538,168.23 = 220,228.62/x
  3. Step 3: Cross multiply
    389,968.98x = 538,168.23 × 220,228.62
  4. Step 4: Simplify right side
    389,968.98x = 118,520,046,620.74
  5. Step 5: Solve for x
    x = 118,520,046,620.74/389,968.98
  6. Step 6: Final answer
    x = 303,921.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.