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Finding the Fourth Proportional to 283,478.70, 425,218.05 and 254,448.30

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Solution

The fourth proportional to 283,478.70, 425,218.05 and 254,448.30 is: 381,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,478.70 : 425,218.05 = 254,448.30 : x
  2. Step 2: Convert to fraction form
    283,478.70/425,218.05 = 254,448.30/x
  3. Step 3: Cross multiply
    283,478.70x = 425,218.05 × 254,448.30
  4. Step 4: Simplify right side
    283,478.70x = 108,196,009,951.82
  5. Step 5: Solve for x
    x = 108,196,009,951.82/283,478.70
  6. Step 6: Final answer
    x = 381,672.45

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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.