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Finding the Fourth Proportional to 313,161.50, 469,820.28 and 91,545.50

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Solution

The fourth proportional to 313,161.50, 469,820.28 and 91,545.50 is: 137,341.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,161.50 : 469,820.28 = 91,545.50 : x
  2. Step 2: Convert to fraction form
    313,161.50/469,820.28 = 91,545.50/x
  3. Step 3: Cross multiply
    313,161.50x = 469,820.28 × 91,545.50
  4. Step 4: Simplify right side
    313,161.50x = 43,009,932,442.74
  5. Step 5: Solve for x
    x = 43,009,932,442.74/313,161.50
  6. Step 6: Final answer
    x = 137,341.06

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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.