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Finding the Fourth Proportional to 228,425.10, 341,981.55 and 139,851.60

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Solution

The fourth proportional to 228,425.10, 341,981.55 and 139,851.60 is: 209,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,425.10 : 341,981.55 = 139,851.60 : x
  2. Step 2: Convert to fraction form
    228,425.10/341,981.55 = 139,851.60/x
  3. Step 3: Cross multiply
    228,425.10x = 341,981.55 × 139,851.60
  4. Step 4: Simplify right side
    228,425.10x = 47,826,666,937.98
  5. Step 5: Solve for x
    x = 47,826,666,937.98/228,425.10
  6. Step 6: Final answer
    x = 209,375.71

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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.