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Finding the Fourth Proportional to 386,458.89, 579,692.04 and 146,508.27

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Solution

The fourth proportional to 386,458.89, 579,692.04 and 146,508.27 is: 219,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,458.89 : 579,692.04 = 146,508.27 : x
  2. Step 2: Convert to fraction form
    386,458.89/579,692.04 = 146,508.27/x
  3. Step 3: Cross multiply
    386,458.89x = 579,692.04 × 146,508.27
  4. Step 4: Simplify right side
    386,458.89x = 84,929,677,913.17
  5. Step 5: Solve for x
    x = 84,929,677,913.17/386,458.89
  6. Step 6: Final answer
    x = 219,763.81

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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.