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Finding the Fourth Proportional to 219,227.10, 328,840.65 and 78,935.10

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Solution

The fourth proportional to 219,227.10, 328,840.65 and 78,935.10 is: 118,402.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,227.10 : 328,840.65 = 78,935.10 : x
  2. Step 2: Convert to fraction form
    219,227.10/328,840.65 = 78,935.10/x
  3. Step 3: Cross multiply
    219,227.10x = 328,840.65 × 78,935.10
  4. Step 4: Simplify right side
    219,227.10x = 25,957,069,591.82
  5. Step 5: Solve for x
    x = 25,957,069,591.82/219,227.10
  6. Step 6: Final answer
    x = 118,402.65

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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.