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Finding the Fourth Proportional to 221,068.40, 331,602.60 and 54,856.40

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Solution

The fourth proportional to 221,068.40, 331,602.60 and 54,856.40 is: 82,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,068.40 : 331,602.60 = 54,856.40 : x
  2. Step 2: Convert to fraction form
    221,068.40/331,602.60 = 54,856.40/x
  3. Step 3: Cross multiply
    221,068.40x = 331,602.60 × 54,856.40
  4. Step 4: Simplify right side
    221,068.40x = 18,190,524,866.64
  5. Step 5: Solve for x
    x = 18,190,524,866.64/221,068.40
  6. Step 6: Final answer
    x = 82,284.60

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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.