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Finding the Fourth Proportional to 144,508.57, 216,758.79 and 39,328.45

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Solution

The fourth proportional to 144,508.57, 216,758.79 and 39,328.45 is: 58,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,508.57 : 216,758.79 = 39,328.45 : x
  2. Step 2: Convert to fraction form
    144,508.57/216,758.79 = 39,328.45/x
  3. Step 3: Cross multiply
    144,508.57x = 216,758.79 × 39,328.45
  4. Step 4: Simplify right side
    144,508.57x = 8,524,787,234.58
  5. Step 5: Solve for x
    x = 8,524,787,234.58/144,508.57
  6. Step 6: Final answer
    x = 58,991.57

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1.5x scale

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.