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Finding the Fourth Proportional to 368,844.60, 553,266.90 and 211,380.60

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Solution

The fourth proportional to 368,844.60, 553,266.90 and 211,380.60 is: 317,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,844.60 : 553,266.90 = 211,380.60 : x
  2. Step 2: Convert to fraction form
    368,844.60/553,266.90 = 211,380.60/x
  3. Step 3: Cross multiply
    368,844.60x = 553,266.90 × 211,380.60
  4. Step 4: Simplify right side
    368,844.60x = 116,949,889,282.14
  5. Step 5: Solve for x
    x = 116,949,889,282.14/368,844.60
  6. Step 6: Final answer
    x = 317,070.90

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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.