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Finding the Fourth Proportional to 257,911.60, 386,867.40 and 226,807.60

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Solution

The fourth proportional to 257,911.60, 386,867.40 and 226,807.60 is: 340,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,911.60 : 386,867.40 = 226,807.60 : x
  2. Step 2: Convert to fraction form
    257,911.60/386,867.40 = 226,807.60/x
  3. Step 3: Cross multiply
    257,911.60x = 386,867.40 × 226,807.60
  4. Step 4: Simplify right side
    257,911.60x = 87,744,466,512.24
  5. Step 5: Solve for x
    x = 87,744,466,512.24/257,911.60
  6. Step 6: Final answer
    x = 340,211.40

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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.