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Finding the Fourth Proportional to 292,864.08, 404,042.76 and 172,009.20

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Solution

The fourth proportional to 292,864.08, 404,042.76 and 172,009.20 is: 237,308.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,864.08 : 404,042.76 = 172,009.20 : x
  2. Step 2: Convert to fraction form
    292,864.08/404,042.76 = 172,009.20/x
  3. Step 3: Cross multiply
    292,864.08x = 404,042.76 × 172,009.20
  4. Step 4: Simplify right side
    292,864.08x = 69,499,071,913.39
  5. Step 5: Solve for x
    x = 69,499,071,913.39/292,864.08
  6. Step 6: Final answer
    x = 237,308.28

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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.