Home / 331,787.60-497,681.40-199,077.20

Finding the Fourth Proportional to 331,787.60, 497,681.40 and 199,077.20

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Solution

The fourth proportional to 331,787.60, 497,681.40 and 199,077.20 is: 298,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,787.60 : 497,681.40 = 199,077.20 : x
  2. Step 2: Convert to fraction form
    331,787.60/497,681.40 = 199,077.20/x
  3. Step 3: Cross multiply
    331,787.60x = 497,681.40 × 199,077.20
  4. Step 4: Simplify right side
    331,787.60x = 99,077,019,604.08
  5. Step 5: Solve for x
    x = 99,077,019,604.08/331,787.60
  6. Step 6: Final answer
    x = 298,615.80

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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.