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Finding the Fourth Proportional to 191,252.80, 286,879.20 and 157,427.20

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Solution

The fourth proportional to 191,252.80, 286,879.20 and 157,427.20 is: 236,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,252.80 : 286,879.20 = 157,427.20 : x
  2. Step 2: Convert to fraction form
    191,252.80/286,879.20 = 157,427.20/x
  3. Step 3: Cross multiply
    191,252.80x = 286,879.20 × 157,427.20
  4. Step 4: Simplify right side
    191,252.80x = 45,162,589,194.24
  5. Step 5: Solve for x
    x = 45,162,589,194.24/191,252.80
  6. Step 6: Final answer
    x = 236,140.80

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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.