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Finding the Fourth Proportional to 633,090.40, 949,635.60 and 212,264.80

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Solution

The fourth proportional to 633,090.40, 949,635.60 and 212,264.80 is: 318,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,090.40 : 949,635.60 = 212,264.80 : x
  2. Step 2: Convert to fraction form
    633,090.40/949,635.60 = 212,264.80/x
  3. Step 3: Cross multiply
    633,090.40x = 949,635.60 × 212,264.80
  4. Step 4: Simplify right side
    633,090.40x = 201,574,210,706.88
  5. Step 5: Solve for x
    x = 201,574,210,706.88/633,090.40
  6. Step 6: Final answer
    x = 318,397.20

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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.