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Finding the Fourth Proportional to 395,030.47, 545,141.69 and 222,984.65

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Solution

The fourth proportional to 395,030.47, 545,141.69 and 222,984.65 is: 307,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,030.47 : 545,141.69 = 222,984.65 : x
  2. Step 2: Convert to fraction form
    395,030.47/545,141.69 = 222,984.65/x
  3. Step 3: Cross multiply
    395,030.47x = 545,141.69 × 222,984.65
  4. Step 4: Simplify right side
    395,030.47x = 121,558,228,945.06
  5. Step 5: Solve for x
    x = 121,558,228,945.06/395,030.47
  6. Step 6: Final answer
    x = 307,718.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.