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Finding the Fourth Proportional to 457,161.20, 684,429.60 and 280,014.20

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Solution

The fourth proportional to 457,161.20, 684,429.60 and 280,014.20 is: 419,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,161.20 : 684,429.60 = 280,014.20 : x
  2. Step 2: Convert to fraction form
    457,161.20/684,429.60 = 280,014.20/x
  3. Step 3: Cross multiply
    457,161.20x = 684,429.60 × 280,014.20
  4. Step 4: Simplify right side
    457,161.20x = 191,650,006,900.32
  5. Step 5: Solve for x
    x = 191,650,006,900.32/457,161.20
  6. Step 6: Final answer
    x = 419,217.57

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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.