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Finding the Fourth Proportional to 396,877.68, 547,689.06 and 215,588.34

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Solution

The fourth proportional to 396,877.68, 547,689.06 and 215,588.34 is: 297,510.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,877.68 : 547,689.06 = 215,588.34 : x
  2. Step 2: Convert to fraction form
    396,877.68/547,689.06 = 215,588.34/x
  3. Step 3: Cross multiply
    396,877.68x = 547,689.06 × 215,588.34
  4. Step 4: Simplify right side
    396,877.68x = 118,075,375,281.56
  5. Step 5: Solve for x
    x = 118,075,375,281.56/396,877.68
  6. Step 6: Final answer
    x = 297,510.75

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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.