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Finding the Fourth Proportional to 208,868.16, 313,300.80 and 51,098.88

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Solution

The fourth proportional to 208,868.16, 313,300.80 and 51,098.88 is: 76,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,868.16 : 313,300.80 = 51,098.88 : x
  2. Step 2: Convert to fraction form
    208,868.16/313,300.80 = 51,098.88/x
  3. Step 3: Cross multiply
    208,868.16x = 313,300.80 × 51,098.88
  4. Step 4: Simplify right side
    208,868.16x = 16,009,319,983.10
  5. Step 5: Solve for x
    x = 16,009,319,983.10/208,868.16
  6. Step 6: Final answer
    x = 76,647.97

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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.