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Finding the Fourth Proportional to 396,359.88, 547,430.88 and 260,998.92

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Solution

The fourth proportional to 396,359.88, 547,430.88 and 260,998.92 is: 360,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,359.88 : 547,430.88 = 260,998.92 : x
  2. Step 2: Convert to fraction form
    396,359.88/547,430.88 = 260,998.92/x
  3. Step 3: Cross multiply
    396,359.88x = 547,430.88 × 260,998.92
  4. Step 4: Simplify right side
    396,359.88x = 142,878,868,454.65
  5. Step 5: Solve for x
    x = 142,878,868,454.65/396,359.88
  6. Step 6: Final answer
    x = 360,477.63

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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.