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Finding the Fourth Proportional to 219,064.32, 328,630.28 and 92,705.28

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Solution

The fourth proportional to 219,064.32, 328,630.28 and 92,705.28 is: 139,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,064.32 : 328,630.28 = 92,705.28 : x
  2. Step 2: Convert to fraction form
    219,064.32/328,630.28 = 92,705.28/x
  3. Step 3: Cross multiply
    219,064.32x = 328,630.28 × 92,705.28
  4. Step 4: Simplify right side
    219,064.32x = 30,465,762,123.88
  5. Step 5: Solve for x
    x = 30,465,762,123.88/219,064.32
  6. Step 6: Final answer
    x = 139,072.22

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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.