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Finding the Fourth Proportional to 219,559.78, 329,339.72 and 53,347.78

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Solution

The fourth proportional to 219,559.78, 329,339.72 and 53,347.78 is: 80,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,559.78 : 329,339.72 = 53,347.78 : x
  2. Step 2: Convert to fraction form
    219,559.78/329,339.72 = 53,347.78/x
  3. Step 3: Cross multiply
    219,559.78x = 329,339.72 × 53,347.78
  4. Step 4: Simplify right side
    219,559.78x = 17,569,542,927.82
  5. Step 5: Solve for x
    x = 17,569,542,927.82/219,559.78
  6. Step 6: Final answer
    x = 80,021.68

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1.5x scale

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.