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Finding the Fourth Proportional to 498,485.55, 747,728.33 and 199,012.35

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Solution

The fourth proportional to 498,485.55, 747,728.33 and 199,012.35 is: 298,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,485.55 : 747,728.33 = 199,012.35 : x
  2. Step 2: Convert to fraction form
    498,485.55/747,728.33 = 199,012.35/x
  3. Step 3: Cross multiply
    498,485.55x = 747,728.33 × 199,012.35
  4. Step 4: Simplify right side
    498,485.55x = 148,807,171,119.81
  5. Step 5: Solve for x
    x = 148,807,171,119.81/498,485.55
  6. Step 6: Final answer
    x = 298,518.53

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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.