Home / 418,741.02-628,374.06-219,221.10

Finding the Fourth Proportional to 418,741.02, 628,374.06 and 219,221.10

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Solution

The fourth proportional to 418,741.02, 628,374.06 and 219,221.10 is: 328,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,741.02 : 628,374.06 = 219,221.10 : x
  2. Step 2: Convert to fraction form
    418,741.02/628,374.06 = 219,221.10/x
  3. Step 3: Cross multiply
    418,741.02x = 628,374.06 × 219,221.10
  4. Step 4: Simplify right side
    418,741.02x = 137,752,852,644.67
  5. Step 5: Solve for x
    x = 137,752,852,644.67/418,741.02
  6. Step 6: Final answer
    x = 328,969.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.