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Finding the Fourth Proportional to 297,785.80, 446,678.70 and 278,102.80

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Solution

The fourth proportional to 297,785.80, 446,678.70 and 278,102.80 is: 417,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,785.80 : 446,678.70 = 278,102.80 : x
  2. Step 2: Convert to fraction form
    297,785.80/446,678.70 = 278,102.80/x
  3. Step 3: Cross multiply
    297,785.80x = 446,678.70 × 278,102.80
  4. Step 4: Simplify right side
    297,785.80x = 124,222,597,170.36
  5. Step 5: Solve for x
    x = 124,222,597,170.36/297,785.80
  6. Step 6: Final answer
    x = 417,154.20

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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.