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Finding the Fourth Proportional to 358,991.19, 538,550.82 and 119,119.50

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Solution

The fourth proportional to 358,991.19, 538,550.82 and 119,119.50 is: 178,700.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,991.19 : 538,550.82 = 119,119.50 : x
  2. Step 2: Convert to fraction form
    358,991.19/538,550.82 = 119,119.50/x
  3. Step 3: Cross multiply
    358,991.19x = 538,550.82 × 119,119.50
  4. Step 4: Simplify right side
    358,991.19x = 64,151,904,402.99
  5. Step 5: Solve for x
    x = 64,151,904,402.99/358,991.19
  6. Step 6: Final answer
    x = 178,700.50

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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.