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Finding the Fourth Proportional to 455,166.20, 681,437.10 and 455,166.20

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Solution

The fourth proportional to 455,166.20, 681,437.10 and 455,166.20 is: 681,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,166.20 : 681,437.10 = 455,166.20 : x
  2. Step 2: Convert to fraction form
    455,166.20/681,437.10 = 455,166.20/x
  3. Step 3: Cross multiply
    455,166.20x = 681,437.10 × 455,166.20
  4. Step 4: Simplify right side
    455,166.20x = 310,167,135,346.02
  5. Step 5: Solve for x
    x = 310,167,135,346.02/455,166.20
  6. Step 6: Final answer
    x = 681,437.10

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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.