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Finding the Fourth Proportional to 356,491.80, 534,818.70 and 119,858.40

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Solution

The fourth proportional to 356,491.80, 534,818.70 and 119,858.40 is: 179,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,491.80 : 534,818.70 = 119,858.40 : x
  2. Step 2: Convert to fraction form
    356,491.80/534,818.70 = 119,858.40/x
  3. Step 3: Cross multiply
    356,491.80x = 534,818.70 × 119,858.40
  4. Step 4: Simplify right side
    356,491.80x = 64,102,513,672.08
  5. Step 5: Solve for x
    x = 64,102,513,672.08/356,491.80
  6. Step 6: Final answer
    x = 179,814.83

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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.