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Finding the Fourth Proportional to 340,653.20, 510,979.80 and 221,680.40

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Solution

The fourth proportional to 340,653.20, 510,979.80 and 221,680.40 is: 332,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,653.20 : 510,979.80 = 221,680.40 : x
  2. Step 2: Convert to fraction form
    340,653.20/510,979.80 = 221,680.40/x
  3. Step 3: Cross multiply
    340,653.20x = 510,979.80 × 221,680.40
  4. Step 4: Simplify right side
    340,653.20x = 113,274,206,455.92
  5. Step 5: Solve for x
    x = 113,274,206,455.92/340,653.20
  6. Step 6: Final answer
    x = 332,520.60

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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.