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Finding the Fourth Proportional to 191,903.22, 287,252.10 and 158,310.90

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Solution

The fourth proportional to 191,903.22, 287,252.10 and 158,310.90 is: 236,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,903.22 : 287,252.10 = 158,310.90 : x
  2. Step 2: Convert to fraction form
    191,903.22/287,252.10 = 158,310.90/x
  3. Step 3: Cross multiply
    191,903.22x = 287,252.10 × 158,310.90
  4. Step 4: Simplify right side
    191,903.22x = 45,475,138,477.89
  5. Step 5: Solve for x
    x = 45,475,138,477.89/191,903.22
  6. Step 6: Final answer
    x = 236,969.13

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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.