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Finding the Fourth Proportional to 455,543.28, 683,380.26 and 140,026.68

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Solution

The fourth proportional to 455,543.28, 683,380.26 and 140,026.68 is: 210,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,543.28 : 683,380.26 = 140,026.68 : x
  2. Step 2: Convert to fraction form
    455,543.28/683,380.26 = 140,026.68/x
  3. Step 3: Cross multiply
    455,543.28x = 683,380.26 × 140,026.68
  4. Step 4: Simplify right side
    455,543.28x = 95,691,468,985.34
  5. Step 5: Solve for x
    x = 95,691,468,985.34/455,543.28
  6. Step 6: Final answer
    x = 210,060.10

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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.