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Finding the Fourth Proportional to 188,210.78, 259,731.30 and 103,333.30

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Solution

The fourth proportional to 188,210.78, 259,731.30 and 103,333.30 is: 142,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,210.78 : 259,731.30 = 103,333.30 : x
  2. Step 2: Convert to fraction form
    188,210.78/259,731.30 = 103,333.30/x
  3. Step 3: Cross multiply
    188,210.78x = 259,731.30 × 103,333.30
  4. Step 4: Simplify right side
    188,210.78x = 26,838,892,342.29
  5. Step 5: Solve for x
    x = 26,838,892,342.29/188,210.78
  6. Step 6: Final answer
    x = 142,600.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.