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Finding the Fourth Proportional to 633,090.90, 949,636.35 and 212,265.30

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Solution

The fourth proportional to 633,090.90, 949,636.35 and 212,265.30 is: 318,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,090.90 : 949,636.35 = 212,265.30 : x
  2. Step 2: Convert to fraction form
    633,090.90/949,636.35 = 212,265.30/x
  3. Step 3: Cross multiply
    633,090.90x = 949,636.35 × 212,265.30
  4. Step 4: Simplify right side
    633,090.90x = 201,574,844,723.66
  5. Step 5: Solve for x
    x = 201,574,844,723.66/633,090.90
  6. Step 6: Final answer
    x = 318,397.95

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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.