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Finding the Fourth Proportional to 373,278.36, 515,101.95 and 212,111.04

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Solution

The fourth proportional to 373,278.36, 515,101.95 and 212,111.04 is: 292,700.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,278.36 : 515,101.95 = 212,111.04 : x
  2. Step 2: Convert to fraction form
    373,278.36/515,101.95 = 212,111.04/x
  3. Step 3: Cross multiply
    373,278.36x = 515,101.95 × 212,111.04
  4. Step 4: Simplify right side
    373,278.36x = 109,258,810,320.53
  5. Step 5: Solve for x
    x = 109,258,810,320.53/373,278.36
  6. Step 6: Final answer
    x = 292,700.63

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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.