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Finding the Fourth Proportional to 364,083.60, 545,866.20 and 139,357.20

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Solution

The fourth proportional to 364,083.60, 545,866.20 and 139,357.20 is: 208,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,083.60 : 545,866.20 = 139,357.20 : x
  2. Step 2: Convert to fraction form
    364,083.60/545,866.20 = 139,357.20/x
  3. Step 3: Cross multiply
    364,083.60x = 545,866.20 × 139,357.20
  4. Step 4: Simplify right side
    364,083.60x = 76,070,385,206.64
  5. Step 5: Solve for x
    x = 76,070,385,206.64/364,083.60
  6. Step 6: Final answer
    x = 208,936.59

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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.