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Finding the Fourth Proportional to 455,739.48, 683,610.90 and 140,194.20

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Solution

The fourth proportional to 455,739.48, 683,610.90 and 140,194.20 is: 210,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,739.48 : 683,610.90 = 140,194.20 : x
  2. Step 2: Convert to fraction form
    455,739.48/683,610.90 = 140,194.20/x
  3. Step 3: Cross multiply
    455,739.48x = 683,610.90 × 140,194.20
  4. Step 4: Simplify right side
    455,739.48x = 95,838,283,236.78
  5. Step 5: Solve for x
    x = 95,838,283,236.78/455,739.48
  6. Step 6: Final answer
    x = 210,291.82

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1.5x scale

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.