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Finding the Fourth Proportional to 219,044.82, 328,425.96 and 85,938.54

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Solution

The fourth proportional to 219,044.82, 328,425.96 and 85,938.54 is: 128,852.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,044.82 : 328,425.96 = 85,938.54 : x
  2. Step 2: Convert to fraction form
    219,044.82/328,425.96 = 85,938.54/x
  3. Step 3: Cross multiply
    219,044.82x = 328,425.96 × 85,938.54
  4. Step 4: Simplify right side
    219,044.82x = 28,224,447,500.50
  5. Step 5: Solve for x
    x = 28,224,447,500.50/219,044.82
  6. Step 6: Final answer
    x = 128,852.39

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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.