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Finding the Fourth Proportional to 191,753.20, 287,629.80 and 162,228.70

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Solution

The fourth proportional to 191,753.20, 287,629.80 and 162,228.70 is: 243,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,753.20 : 287,629.80 = 162,228.70 : x
  2. Step 2: Convert to fraction form
    191,753.20/287,629.80 = 162,228.70/x
  3. Step 3: Cross multiply
    191,753.20x = 287,629.80 × 162,228.70
  4. Step 4: Simplify right side
    191,753.20x = 46,661,808,535.26
  5. Step 5: Solve for x
    x = 46,661,808,535.26/191,753.20
  6. Step 6: Final answer
    x = 243,343.05

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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.