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Finding the Fourth Proportional to 358,961.60, 538,879.80 and 356,337.20

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Solution

The fourth proportional to 358,961.60, 538,879.80 and 356,337.20 is: 534,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,961.60 : 538,879.80 = 356,337.20 : x
  2. Step 2: Convert to fraction form
    358,961.60/538,879.80 = 356,337.20/x
  3. Step 3: Cross multiply
    358,961.60x = 538,879.80 × 356,337.20
  4. Step 4: Simplify right side
    358,961.60x = 192,022,919,068.56
  5. Step 5: Solve for x
    x = 192,022,919,068.56/358,961.60
  6. Step 6: Final answer
    x = 534,940.00

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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.