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Finding the Fourth Proportional to 300,066.60, 449,639.10 and 260,437.80

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Solution

The fourth proportional to 300,066.60, 449,639.10 and 260,437.80 is: 390,256.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,066.60 : 449,639.10 = 260,437.80 : x
  2. Step 2: Convert to fraction form
    300,066.60/449,639.10 = 260,437.80/x
  3. Step 3: Cross multiply
    300,066.60x = 449,639.10 × 260,437.80
  4. Step 4: Simplify right side
    300,066.60x = 117,103,017,997.98
  5. Step 5: Solve for x
    x = 117,103,017,997.98/300,066.60
  6. Step 6: Final answer
    x = 390,256.76

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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.