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Finding the Fourth Proportional to 220,688.60, 304,857.70 and 212,495.54

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Solution

The fourth proportional to 220,688.60, 304,857.70 and 212,495.54 is: 293,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,688.60 : 304,857.70 = 212,495.54 : x
  2. Step 2: Convert to fraction form
    220,688.60/304,857.70 = 212,495.54/x
  3. Step 3: Cross multiply
    220,688.60x = 304,857.70 × 212,495.54
  4. Step 4: Simplify right side
    220,688.60x = 64,780,899,529.13
  5. Step 5: Solve for x
    x = 64,780,899,529.13/220,688.60
  6. Step 6: Final answer
    x = 293,539.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.