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Finding the Fourth Proportional to 392,254.95, 540,664.95 and 277,385.43

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Solution

The fourth proportional to 392,254.95, 540,664.95 and 277,385.43 is: 382,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,254.95 : 540,664.95 = 277,385.43 : x
  2. Step 2: Convert to fraction form
    392,254.95/540,664.95 = 277,385.43/x
  3. Step 3: Cross multiply
    392,254.95x = 540,664.95 × 277,385.43
  4. Step 4: Simplify right side
    392,254.95x = 149,972,579,641.68
  5. Step 5: Solve for x
    x = 149,972,579,641.68/392,254.95
  6. Step 6: Final answer
    x = 382,334.45

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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.