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Finding the Fourth Proportional to 304,832.80, 457,249.20 and 138,620.80

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Solution

The fourth proportional to 304,832.80, 457,249.20 and 138,620.80 is: 207,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,832.80 : 457,249.20 = 138,620.80 : x
  2. Step 2: Convert to fraction form
    304,832.80/457,249.20 = 138,620.80/x
  3. Step 3: Cross multiply
    304,832.80x = 457,249.20 × 138,620.80
  4. Step 4: Simplify right side
    304,832.80x = 63,384,249,903.36
  5. Step 5: Solve for x
    x = 63,384,249,903.36/304,832.80
  6. Step 6: Final answer
    x = 207,931.20

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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.