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Finding the Fourth Proportional to 208,337.15, 312,621.55 and 101,722.41

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Solution

The fourth proportional to 208,337.15, 312,621.55 and 101,722.41 is: 152,640.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,337.15 : 312,621.55 = 101,722.41 : x
  2. Step 2: Convert to fraction form
    208,337.15/312,621.55 = 101,722.41/x
  3. Step 3: Cross multiply
    208,337.15x = 312,621.55 × 101,722.41
  4. Step 4: Simplify right side
    208,337.15x = 31,800,617,483.94
  5. Step 5: Solve for x
    x = 31,800,617,483.94/208,337.15
  6. Step 6: Final answer
    x = 152,640.17

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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.