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Finding the Fourth Proportional to 208,489.05, 313,079.52 and 130,101.48

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Solution

The fourth proportional to 208,489.05, 313,079.52 and 130,101.48 is: 195,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,489.05 : 313,079.52 = 130,101.48 : x
  2. Step 2: Convert to fraction form
    208,489.05/313,079.52 = 130,101.48/x
  3. Step 3: Cross multiply
    208,489.05x = 313,079.52 × 130,101.48
  4. Step 4: Simplify right side
    208,489.05x = 40,732,108,909.69
  5. Step 5: Solve for x
    x = 40,732,108,909.69/208,489.05
  6. Step 6: Final answer
    x = 195,368.10

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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.