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Finding the Fourth Proportional to 478,957.33, 661,056.82 and 275,148.17

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Solution

The fourth proportional to 478,957.33, 661,056.82 and 275,148.17 is: 379,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,957.33 : 661,056.82 = 275,148.17 : x
  2. Step 2: Convert to fraction form
    478,957.33/661,056.82 = 275,148.17/x
  3. Step 3: Cross multiply
    478,957.33x = 661,056.82 × 275,148.17
  4. Step 4: Simplify right side
    478,957.33x = 181,888,570,295.87
  5. Step 5: Solve for x
    x = 181,888,570,295.87/478,957.33
  6. Step 6: Final answer
    x = 379,759.45

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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.