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Finding the Fourth Proportional to 632,807.60, 949,211.40 and 212,097.20

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Solution

The fourth proportional to 632,807.60, 949,211.40 and 212,097.20 is: 318,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,807.60 : 949,211.40 = 212,097.20 : x
  2. Step 2: Convert to fraction form
    632,807.60/949,211.40 = 212,097.20/x
  3. Step 3: Cross multiply
    632,807.60x = 949,211.40 × 212,097.20
  4. Step 4: Simplify right side
    632,807.60x = 201,325,080,148.08
  5. Step 5: Solve for x
    x = 201,325,080,148.08/632,807.60
  6. Step 6: Final answer
    x = 318,145.80

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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.