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Finding the Fourth Proportional to 358,818.85, 538,041.39 and 169,228.31

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Solution

The fourth proportional to 358,818.85, 538,041.39 and 169,228.31 is: 253,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,818.85 : 538,041.39 = 169,228.31 : x
  2. Step 2: Convert to fraction form
    358,818.85/538,041.39 = 169,228.31/x
  3. Step 3: Cross multiply
    358,818.85x = 538,041.39 × 169,228.31
  4. Step 4: Simplify right side
    358,818.85x = 91,051,835,139.75
  5. Step 5: Solve for x
    x = 91,051,835,139.75/358,818.85
  6. Step 6: Final answer
    x = 253,754.33

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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.