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Finding the Fourth Proportional to 455,687.80, 683,597.06 and 140,171.32

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Solution

The fourth proportional to 455,687.80, 683,597.06 and 140,171.32 is: 210,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,687.80 : 683,597.06 = 140,171.32 : x
  2. Step 2: Convert to fraction form
    455,687.80/683,597.06 = 140,171.32/x
  3. Step 3: Cross multiply
    455,687.80x = 683,597.06 × 140,171.32
  4. Step 4: Simplify right side
    455,687.80x = 95,820,702,248.32
  5. Step 5: Solve for x
    x = 95,820,702,248.32/455,687.80
  6. Step 6: Final answer
    x = 210,277.08

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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.