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Finding the Fourth Proportional to 208,014.29, 312,068.41 and 65,868.20

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Solution

The fourth proportional to 208,014.29, 312,068.41 and 65,868.20 is: 98,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,014.29 : 312,068.41 = 65,868.20 : x
  2. Step 2: Convert to fraction form
    208,014.29/312,068.41 = 65,868.20/x
  3. Step 3: Cross multiply
    208,014.29x = 312,068.41 × 65,868.20
  4. Step 4: Simplify right side
    208,014.29x = 20,555,382,718.55
  5. Step 5: Solve for x
    x = 20,555,382,718.55/208,014.29
  6. Step 6: Final answer
    x = 98,817.17

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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.