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Finding the Fourth Proportional to 245,439.60, 367,900.20 and 140,031.60

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Solution

The fourth proportional to 245,439.60, 367,900.20 and 140,031.60 is: 209,899.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,439.60 : 367,900.20 = 140,031.60 : x
  2. Step 2: Convert to fraction form
    245,439.60/367,900.20 = 140,031.60/x
  3. Step 3: Cross multiply
    245,439.60x = 367,900.20 × 140,031.60
  4. Step 4: Simplify right side
    245,439.60x = 51,517,653,646.32
  5. Step 5: Solve for x
    x = 51,517,653,646.32/245,439.60
  6. Step 6: Final answer
    x = 209,899.52

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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.