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Finding the Fourth Proportional to 363,873.79, 545,980.18 and 139,160.22

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Solution

The fourth proportional to 363,873.79, 545,980.18 and 139,160.22 is: 208,805.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,873.79 : 545,980.18 = 139,160.22 : x
  2. Step 2: Convert to fraction form
    363,873.79/545,980.18 = 139,160.22/x
  3. Step 3: Cross multiply
    363,873.79x = 545,980.18 × 139,160.22
  4. Step 4: Simplify right side
    363,873.79x = 75,978,721,964.44
  5. Step 5: Solve for x
    x = 75,978,721,964.44/363,873.79
  6. Step 6: Final answer
    x = 208,805.15

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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.