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Finding the Fourth Proportional to 219,894.85, 303,483.52 and 123,135.55

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Solution

The fourth proportional to 219,894.85, 303,483.52 and 123,135.55 is: 169,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,894.85 : 303,483.52 = 123,135.55 : x
  2. Step 2: Convert to fraction form
    219,894.85/303,483.52 = 123,135.55/x
  3. Step 3: Cross multiply
    219,894.85x = 303,483.52 × 123,135.55
  4. Step 4: Simplify right side
    219,894.85x = 37,369,610,560.80
  5. Step 5: Solve for x
    x = 37,369,610,560.80/219,894.85
  6. Step 6: Final answer
    x = 169,943.09

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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.