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Finding the Fourth Proportional to 348,891.20, 523,336.80 and 321,934.40

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Solution

The fourth proportional to 348,891.20, 523,336.80 and 321,934.40 is: 482,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,891.20 : 523,336.80 = 321,934.40 : x
  2. Step 2: Convert to fraction form
    348,891.20/523,336.80 = 321,934.40/x
  3. Step 3: Cross multiply
    348,891.20x = 523,336.80 × 321,934.40
  4. Step 4: Simplify right side
    348,891.20x = 168,480,118,705.92
  5. Step 5: Solve for x
    x = 168,480,118,705.92/348,891.20
  6. Step 6: Final answer
    x = 482,901.60

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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.