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Finding the Fourth Proportional to 369,879.31, 510,431.30 and 200,109.79

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Solution

The fourth proportional to 369,879.31, 510,431.30 and 200,109.79 is: 276,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,879.31 : 510,431.30 = 200,109.79 : x
  2. Step 2: Convert to fraction form
    369,879.31/510,431.30 = 200,109.79/x
  3. Step 3: Cross multiply
    369,879.31x = 510,431.30 × 200,109.79
  4. Step 4: Simplify right side
    369,879.31x = 102,142,297,700.27
  5. Step 5: Solve for x
    x = 102,142,297,700.27/369,879.31
  6. Step 6: Final answer
    x = 276,150.35

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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.