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Finding the Fourth Proportional to 313,139.30, 469,677.80 and 144,657.22

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Solution

The fourth proportional to 313,139.30, 469,677.80 and 144,657.22 is: 216,971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,139.30 : 469,677.80 = 144,657.22 : x
  2. Step 2: Convert to fraction form
    313,139.30/469,677.80 = 144,657.22/x
  3. Step 3: Cross multiply
    313,139.30x = 469,677.80 × 144,657.22
  4. Step 4: Simplify right side
    313,139.30x = 67,942,284,843.72
  5. Step 5: Solve for x
    x = 67,942,284,843.72/313,139.30
  6. Step 6: Final answer
    x = 216,971.44

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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.