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Finding the Fourth Proportional to 478,954.54, 661,001.61 and 275,032.18

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Solution

The fourth proportional to 478,954.54, 661,001.61 and 275,032.18 is: 379,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,954.54 : 661,001.61 = 275,032.18 : x
  2. Step 2: Convert to fraction form
    478,954.54/661,001.61 = 275,032.18/x
  3. Step 3: Cross multiply
    478,954.54x = 661,001.61 × 275,032.18
  4. Step 4: Simplify right side
    478,954.54x = 181,796,713,781.81
  5. Step 5: Solve for x
    x = 181,796,713,781.81/478,954.54
  6. Step 6: Final answer
    x = 379,569.87

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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.