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Finding the Fourth Proportional to 280,542.30, 420,813.45 and 114,330.30

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Solution

The fourth proportional to 280,542.30, 420,813.45 and 114,330.30 is: 171,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,542.30 : 420,813.45 = 114,330.30 : x
  2. Step 2: Convert to fraction form
    280,542.30/420,813.45 = 114,330.30/x
  3. Step 3: Cross multiply
    280,542.30x = 420,813.45 × 114,330.30
  4. Step 4: Simplify right side
    280,542.30x = 48,111,727,982.54
  5. Step 5: Solve for x
    x = 48,111,727,982.54/280,542.30
  6. Step 6: Final answer
    x = 171,495.45

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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.