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Finding the Fourth Proportional to 223,845.54, 309,055.68 and 172,070.88

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Solution

The fourth proportional to 223,845.54, 309,055.68 and 172,070.88 is: 237,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,845.54 : 309,055.68 = 172,070.88 : x
  2. Step 2: Convert to fraction form
    223,845.54/309,055.68 = 172,070.88/x
  3. Step 3: Cross multiply
    223,845.54x = 309,055.68 × 172,070.88
  4. Step 4: Simplify right side
    223,845.54x = 53,179,482,826.60
  5. Step 5: Solve for x
    x = 53,179,482,826.60/223,845.54
  6. Step 6: Final answer
    x = 237,572.22

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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.