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Finding the Fourth Proportional to 208,153.83, 312,244.65 and 73,201.71

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Solution

The fourth proportional to 208,153.83, 312,244.65 and 73,201.71 is: 109,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,153.83 : 312,244.65 = 73,201.71 : x
  2. Step 2: Convert to fraction form
    208,153.83/312,244.65 = 73,201.71/x
  3. Step 3: Cross multiply
    208,153.83x = 312,244.65 × 73,201.71
  4. Step 4: Simplify right side
    208,153.83x = 22,856,842,318.35
  5. Step 5: Solve for x
    x = 22,856,842,318.35/208,153.83
  6. Step 6: Final answer
    x = 109,807.45

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1.5x scale

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.