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Finding the Fourth Proportional to 280,187.70, 420,281.55 and 246,945.30

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Solution

The fourth proportional to 280,187.70, 420,281.55 and 246,945.30 is: 370,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,187.70 : 420,281.55 = 246,945.30 : x
  2. Step 2: Convert to fraction form
    280,187.70/420,281.55 = 246,945.30/x
  3. Step 3: Cross multiply
    280,187.70x = 420,281.55 × 246,945.30
  4. Step 4: Simplify right side
    280,187.70x = 103,786,553,449.22
  5. Step 5: Solve for x
    x = 103,786,553,449.22/280,187.70
  6. Step 6: Final answer
    x = 370,417.95

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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.