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Finding the Fourth Proportional to 288,002.80, 432,198.60 and 187,919.20

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Solution

The fourth proportional to 288,002.80, 432,198.60 and 187,919.20 is: 282,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,002.80 : 432,198.60 = 187,919.20 : x
  2. Step 2: Convert to fraction form
    288,002.80/432,198.60 = 187,919.20/x
  3. Step 3: Cross multiply
    288,002.80x = 432,198.60 × 187,919.20
  4. Step 4: Simplify right side
    288,002.80x = 81,218,415,153.12
  5. Step 5: Solve for x
    x = 81,218,415,153.12/288,002.80
  6. Step 6: Final answer
    x = 282,005.64

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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.