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Finding the Fourth Proportional to 358,991.07, 538,550.63 and 119,119.38

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Solution

The fourth proportional to 358,991.07, 538,550.63 and 119,119.38 is: 178,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,991.07 : 538,550.63 = 119,119.38 : x
  2. Step 2: Convert to fraction form
    358,991.07/538,550.63 = 119,119.38/x
  3. Step 3: Cross multiply
    358,991.07x = 538,550.63 × 119,119.38
  4. Step 4: Simplify right side
    358,991.07x = 64,151,817,144.21
  5. Step 5: Solve for x
    x = 64,151,817,144.21/358,991.07
  6. Step 6: Final answer
    x = 178,700.31

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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.