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Finding the Fourth Proportional to 144,715.35, 217,406.58 and 138,736.83

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Solution

The fourth proportional to 144,715.35, 217,406.58 and 138,736.83 is: 208,425.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,715.35 : 217,406.58 = 138,736.83 : x
  2. Step 2: Convert to fraction form
    144,715.35/217,406.58 = 138,736.83/x
  3. Step 3: Cross multiply
    144,715.35x = 217,406.58 × 138,736.83
  4. Step 4: Simplify right side
    144,715.35x = 30,162,299,730.34
  5. Step 5: Solve for x
    x = 30,162,299,730.34/144,715.35
  6. Step 6: Final answer
    x = 208,425.02

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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.