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Finding the Fourth Proportional to 364,064.60, 545,837.70 and 139,338.20

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Solution

The fourth proportional to 364,064.60, 545,837.70 and 139,338.20 is: 208,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,064.60 : 545,837.70 = 139,338.20 : x
  2. Step 2: Convert to fraction form
    364,064.60/545,837.70 = 139,338.20/x
  3. Step 3: Cross multiply
    364,064.60x = 545,837.70 × 139,338.20
  4. Step 4: Simplify right side
    364,064.60x = 76,056,042,610.14
  5. Step 5: Solve for x
    x = 76,056,042,610.14/364,064.60
  6. Step 6: Final answer
    x = 208,908.10

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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.