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Finding the Fourth Proportional to 554,284.60, 831,426.90 and 199,310.20

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Solution

The fourth proportional to 554,284.60, 831,426.90 and 199,310.20 is: 298,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,284.60 : 831,426.90 = 199,310.20 : x
  2. Step 2: Convert to fraction form
    554,284.60/831,426.90 = 199,310.20/x
  3. Step 3: Cross multiply
    554,284.60x = 831,426.90 × 199,310.20
  4. Step 4: Simplify right side
    554,284.60x = 165,711,861,724.38
  5. Step 5: Solve for x
    x = 165,711,861,724.38/554,284.60
  6. Step 6: Final answer
    x = 298,965.30

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Double scale
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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.