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Finding the Fourth Proportional to 366,949.90, 550,424.85 and 260,661.70

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Solution

The fourth proportional to 366,949.90, 550,424.85 and 260,661.70 is: 390,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,949.90 : 550,424.85 = 260,661.70 : x
  2. Step 2: Convert to fraction form
    366,949.90/550,424.85 = 260,661.70/x
  3. Step 3: Cross multiply
    366,949.90x = 550,424.85 × 260,661.70
  4. Step 4: Simplify right side
    366,949.90x = 143,474,677,123.25
  5. Step 5: Solve for x
    x = 143,474,677,123.25/366,949.90
  6. Step 6: Final answer
    x = 390,992.55

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Similar ratio
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1.5x scale

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.