Home / 373,261.80-515,109.02-209,921.43

Finding the Fourth Proportional to 373,261.80, 515,109.02 and 209,921.43

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Solution

The fourth proportional to 373,261.80, 515,109.02 and 209,921.43 is: 289,695.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,261.80 : 515,109.02 = 209,921.43 : x
  2. Step 2: Convert to fraction form
    373,261.80/515,109.02 = 209,921.43/x
  3. Step 3: Cross multiply
    373,261.80x = 515,109.02 × 209,921.43
  4. Step 4: Simplify right side
    373,261.80x = 108,132,422,084.30
  5. Step 5: Solve for x
    x = 108,132,422,084.30/373,261.80
  6. Step 6: Final answer
    x = 289,695.92

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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.