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Finding the Fourth Proportional to 219,270.76, 328,878.80 and 61,511.51

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Solution

The fourth proportional to 219,270.76, 328,878.80 and 61,511.51 is: 92,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,270.76 : 328,878.80 = 61,511.51 : x
  2. Step 2: Convert to fraction form
    219,270.76/328,878.80 = 61,511.51/x
  3. Step 3: Cross multiply
    219,270.76x = 328,878.80 × 61,511.51
  4. Step 4: Simplify right side
    219,270.76x = 20,229,831,287.43
  5. Step 5: Solve for x
    x = 20,229,831,287.43/219,270.76
  6. Step 6: Final answer
    x = 92,259.60

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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.