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Finding the Fourth Proportional to 478,850.40, 660,818.16 and 263,998.80

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Solution

The fourth proportional to 478,850.40, 660,818.16 and 263,998.80 is: 364,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,850.40 : 660,818.16 = 263,998.80 : x
  2. Step 2: Convert to fraction form
    478,850.40/660,818.16 = 263,998.80/x
  3. Step 3: Cross multiply
    478,850.40x = 660,818.16 × 263,998.80
  4. Step 4: Simplify right side
    478,850.40x = 174,455,201,258.21
  5. Step 5: Solve for x
    x = 174,455,201,258.21/478,850.40
  6. Step 6: Final answer
    x = 364,320.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.