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Finding the Fourth Proportional to 396,003.20, 546,340.80 and 260,110.64

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Solution

The fourth proportional to 396,003.20, 546,340.80 and 260,110.64 is: 358,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,003.20 : 546,340.80 = 260,110.64 : x
  2. Step 2: Convert to fraction form
    396,003.20/546,340.80 = 260,110.64/x
  3. Step 3: Cross multiply
    396,003.20x = 546,340.80 × 260,110.64
  4. Step 4: Simplify right side
    396,003.20x = 142,109,055,146.11
  5. Step 5: Solve for x
    x = 142,109,055,146.11/396,003.20
  6. Step 6: Final answer
    x = 358,858.35

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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.