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Finding the Fourth Proportional to 144,611.46, 216,914.83 and 39,430.40

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Solution

The fourth proportional to 144,611.46, 216,914.83 and 39,430.40 is: 59,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,611.46 : 216,914.83 = 39,430.40 : x
  2. Step 2: Convert to fraction form
    144,611.46/216,914.83 = 39,430.40/x
  3. Step 3: Cross multiply
    144,611.46x = 216,914.83 × 39,430.40
  4. Step 4: Simplify right side
    144,611.46x = 8,553,037,329.68
  5. Step 5: Solve for x
    x = 8,553,037,329.68/144,611.46
  6. Step 6: Final answer
    x = 59,144.95

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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.