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Finding the Fourth Proportional to 219,237.80, 328,747.35 and 100,775.30

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Solution

The fourth proportional to 219,237.80, 328,747.35 and 100,775.30 is: 151,112.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,237.80 : 328,747.35 = 100,775.30 : x
  2. Step 2: Convert to fraction form
    219,237.80/328,747.35 = 100,775.30/x
  3. Step 3: Cross multiply
    219,237.80x = 328,747.35 × 100,775.30
  4. Step 4: Simplify right side
    219,237.80x = 33,129,612,820.46
  5. Step 5: Solve for x
    x = 33,129,612,820.46/219,237.80
  6. Step 6: Final answer
    x = 151,112.69

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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.