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Finding the Fourth Proportional to 354,821.20, 532,231.80 and 186,276.40

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Solution

The fourth proportional to 354,821.20, 532,231.80 and 186,276.40 is: 279,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,821.20 : 532,231.80 = 186,276.40 : x
  2. Step 2: Convert to fraction form
    354,821.20/532,231.80 = 186,276.40/x
  3. Step 3: Cross multiply
    354,821.20x = 532,231.80 × 186,276.40
  4. Step 4: Simplify right side
    354,821.20x = 99,142,223,669.52
  5. Step 5: Solve for x
    x = 99,142,223,669.52/354,821.20
  6. Step 6: Final answer
    x = 279,414.60

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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.