Home / 373,642.12-515,637.45-212,520.34

Finding the Fourth Proportional to 373,642.12, 515,637.45 and 212,520.34

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Solution

The fourth proportional to 373,642.12, 515,637.45 and 212,520.34 is: 293,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,642.12 : 515,637.45 = 212,520.34 : x
  2. Step 2: Convert to fraction form
    373,642.12/515,637.45 = 212,520.34/x
  3. Step 3: Cross multiply
    373,642.12x = 515,637.45 × 212,520.34
  4. Step 4: Simplify right side
    373,642.12x = 109,583,446,190.73
  5. Step 5: Solve for x
    x = 109,583,446,190.73/373,642.12
  6. Step 6: Final answer
    x = 293,284.51

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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.