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Finding the Fourth Proportional to 358,520.19, 538,112.79 and 181,151.76

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Solution

The fourth proportional to 358,520.19, 538,112.79 and 181,151.76 is: 271,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,520.19 : 538,112.79 = 181,151.76 : x
  2. Step 2: Convert to fraction form
    358,520.19/538,112.79 = 181,151.76/x
  3. Step 3: Cross multiply
    358,520.19x = 538,112.79 × 181,151.76
  4. Step 4: Simplify right side
    358,520.19x = 97,480,078,987.01
  5. Step 5: Solve for x
    x = 97,480,078,987.01/358,520.19
  6. Step 6: Final answer
    x = 271,895.65

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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.