Home / 396,787.80-547,567.02-215,499.48

Finding the Fourth Proportional to 396,787.80, 547,567.02 and 215,499.48

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Solution

The fourth proportional to 396,787.80, 547,567.02 and 215,499.48 is: 297,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,787.80 : 547,567.02 = 215,499.48 : x
  2. Step 2: Convert to fraction form
    396,787.80/547,567.02 = 215,499.48/x
  3. Step 3: Cross multiply
    396,787.80x = 547,567.02 × 215,499.48
  4. Step 4: Simplify right side
    396,787.80x = 118,000,408,075.15
  5. Step 5: Solve for x
    x = 118,000,408,075.15/396,787.80
  6. Step 6: Final answer
    x = 297,389.20

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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.