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Finding the Fourth Proportional to 254,244.60, 381,366.90 and 212,772.60

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Solution

The fourth proportional to 254,244.60, 381,366.90 and 212,772.60 is: 319,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,244.60 : 381,366.90 = 212,772.60 : x
  2. Step 2: Convert to fraction form
    254,244.60/381,366.90 = 212,772.60/x
  3. Step 3: Cross multiply
    254,244.60x = 381,366.90 × 212,772.60
  4. Step 4: Simplify right side
    254,244.60x = 81,144,426,866.94
  5. Step 5: Solve for x
    x = 81,144,426,866.94/254,244.60
  6. Step 6: Final answer
    x = 319,158.90

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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.