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Finding the Fourth Proportional to 208,179.16, 312,311.94 and 83,529.88

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Solution

The fourth proportional to 208,179.16, 312,311.94 and 83,529.88 is: 125,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179.16 : 312,311.94 = 83,529.88 : x
  2. Step 2: Convert to fraction form
    208,179.16/312,311.94 = 83,529.88/x
  3. Step 3: Cross multiply
    208,179.16x = 312,311.94 × 83,529.88
  4. Step 4: Simplify right side
    208,179.16x = 26,087,378,870.77
  5. Step 5: Solve for x
    x = 26,087,378,870.77/208,179.16
  6. Step 6: Final answer
    x = 125,312.15

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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.