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Finding the Fourth Proportional to 219,112.76, 328,688.28 and 61,341.71

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Solution

The fourth proportional to 219,112.76, 328,688.28 and 61,341.71 is: 92,017.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,112.76 : 328,688.28 = 61,341.71 : x
  2. Step 2: Convert to fraction form
    219,112.76/328,688.28 = 61,341.71/x
  3. Step 3: Cross multiply
    219,112.76x = 328,688.28 × 61,341.71
  4. Step 4: Simplify right side
    219,112.76x = 20,162,299,508.72
  5. Step 5: Solve for x
    x = 20,162,299,508.72/219,112.76
  6. Step 6: Final answer
    x = 92,017.91

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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.