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Finding the Fourth Proportional to 300,090.60, 449,675.10 and 260,461.80

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Solution

The fourth proportional to 300,090.60, 449,675.10 and 260,461.80 is: 390,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,090.60 : 449,675.10 = 260,461.80 : x
  2. Step 2: Convert to fraction form
    300,090.60/449,675.10 = 260,461.80/x
  3. Step 3: Cross multiply
    300,090.60x = 449,675.10 × 260,461.80
  4. Step 4: Simplify right side
    300,090.60x = 117,123,185,961.18
  5. Step 5: Solve for x
    x = 117,123,185,961.18/300,090.60
  6. Step 6: Final answer
    x = 390,292.75

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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.