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Finding the Fourth Proportional to 403,276, 604,914 and 140,620

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Solution

The fourth proportional to 403,276, 604,914 and 140,620 is: 210,930

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,276 : 604,914 = 140,620 : x
  2. Step 2: Convert to fraction form
    403,276/604,914 = 140,620/x
  3. Step 3: Cross multiply
    403,276x = 604,914 × 140,620
  4. Step 4: Simplify right side
    403,276x = 85,063,006,680
  5. Step 5: Solve for x
    x = 85,063,006,680/403,276
  6. Step 6: Final answer
    x = 210,930

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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.