Home / 389,902.04-538,004.14-220,132.60

Finding the Fourth Proportional to 389,902.04, 538,004.14 and 220,132.60

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Solution

The fourth proportional to 389,902.04, 538,004.14 and 220,132.60 is: 303,748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,902.04 : 538,004.14 = 220,132.60 : x
  2. Step 2: Convert to fraction form
    389,902.04/538,004.14 = 220,132.60/x
  3. Step 3: Cross multiply
    389,902.04x = 538,004.14 × 220,132.60
  4. Step 4: Simplify right side
    389,902.04x = 118,432,250,148.96
  5. Step 5: Solve for x
    x = 118,432,250,148.96/389,902.04
  6. Step 6: Final answer
    x = 303,748.73

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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.