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Finding the Fourth Proportional to 330,815.70, 496,223.55 and 190,458.90

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Solution

The fourth proportional to 330,815.70, 496,223.55 and 190,458.90 is: 285,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,815.70 : 496,223.55 = 190,458.90 : x
  2. Step 2: Convert to fraction form
    330,815.70/496,223.55 = 190,458.90/x
  3. Step 3: Cross multiply
    330,815.70x = 496,223.55 × 190,458.90
  4. Step 4: Simplify right side
    330,815.70x = 94,510,191,487.10
  5. Step 5: Solve for x
    x = 94,510,191,487.10/330,815.70
  6. Step 6: Final answer
    x = 285,688.35

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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.