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Finding the Fourth Proportional to 219,227.20, 328,840.80 and 144,431.80

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Solution

The fourth proportional to 219,227.20, 328,840.80 and 144,431.80 is: 216,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,227.20 : 328,840.80 = 144,431.80 : x
  2. Step 2: Convert to fraction form
    219,227.20/328,840.80 = 144,431.80/x
  3. Step 3: Cross multiply
    219,227.20x = 328,840.80 × 144,431.80
  4. Step 4: Simplify right side
    219,227.20x = 47,495,068,657.44
  5. Step 5: Solve for x
    x = 47,495,068,657.44/219,227.20
  6. Step 6: Final answer
    x = 216,647.70

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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.