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Finding the Fourth Proportional to 355,379.10, 532,809.45 and 144,908.70

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Solution

The fourth proportional to 355,379.10, 532,809.45 and 144,908.70 is: 217,257.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,379.10 : 532,809.45 = 144,908.70 : x
  2. Step 2: Convert to fraction form
    355,379.10/532,809.45 = 144,908.70/x
  3. Step 3: Cross multiply
    355,379.10x = 532,809.45 × 144,908.70
  4. Step 4: Simplify right side
    355,379.10x = 77,208,724,747.22
  5. Step 5: Solve for x
    x = 77,208,724,747.22/355,379.10
  6. Step 6: Final answer
    x = 217,257.36

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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.