Home / 373,272.74-515,116.38-212,128.10

Finding the Fourth Proportional to 373,272.74, 515,116.38 and 212,128.10

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Solution

The fourth proportional to 373,272.74, 515,116.38 and 212,128.10 is: 292,736.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,272.74 : 515,116.38 = 212,128.10 : x
  2. Step 2: Convert to fraction form
    373,272.74/515,116.38 = 212,128.10/x
  3. Step 3: Cross multiply
    373,272.74x = 515,116.38 × 212,128.10
  4. Step 4: Simplify right side
    373,272.74x = 109,270,658,968.28
  5. Step 5: Solve for x
    x = 109,270,658,968.28/373,272.74
  6. Step 6: Final answer
    x = 292,736.78

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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.