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Finding the Fourth Proportional to 545,947.20, 818,920.80 and 280,226.70

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Solution

The fourth proportional to 545,947.20, 818,920.80 and 280,226.70 is: 420,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,947.20 : 818,920.80 = 280,226.70 : x
  2. Step 2: Convert to fraction form
    545,947.20/818,920.80 = 280,226.70/x
  3. Step 3: Cross multiply
    545,947.20x = 818,920.80 × 280,226.70
  4. Step 4: Simplify right side
    545,947.20x = 229,483,473,345.36
  5. Step 5: Solve for x
    x = 229,483,473,345.36/545,947.20
  6. Step 6: Final answer
    x = 420,340.05

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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.