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Finding the Fourth Proportional to 364,034.55, 545,887.80 and 139,320.30

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Solution

The fourth proportional to 364,034.55, 545,887.80 and 139,320.30 is: 208,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,034.55 : 545,887.80 = 139,320.30 : x
  2. Step 2: Convert to fraction form
    364,034.55/545,887.80 = 139,320.30/x
  3. Step 3: Cross multiply
    364,034.55x = 545,887.80 × 139,320.30
  4. Step 4: Simplify right side
    364,034.55x = 76,053,252,062.34
  5. Step 5: Solve for x
    x = 76,053,252,062.34/364,034.55
  6. Step 6: Final answer
    x = 208,917.68

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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.