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Finding the Fourth Proportional to 454,405.17, 681,609.38 and 138,860.76

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Solution

The fourth proportional to 454,405.17, 681,609.38 and 138,860.76 is: 208,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,405.17 : 681,609.38 = 138,860.76 : x
  2. Step 2: Convert to fraction form
    454,405.17/681,609.38 = 138,860.76/x
  3. Step 3: Cross multiply
    454,405.17x = 681,609.38 × 138,860.76
  4. Step 4: Simplify right side
    454,405.17x = 94,648,795,835.63
  5. Step 5: Solve for x
    x = 94,648,795,835.63/454,405.17
  6. Step 6: Final answer
    x = 208,291.64

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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.