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Finding the Fourth Proportional to 274,632.50, 378,999.88 and 153,799.32

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Solution

The fourth proportional to 274,632.50, 378,999.88 and 153,799.32 is: 212,247.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,632.50 : 378,999.88 = 153,799.32 : x
  2. Step 2: Convert to fraction form
    274,632.50/378,999.88 = 153,799.32/x
  3. Step 3: Cross multiply
    274,632.50x = 378,999.88 × 153,799.32
  4. Step 4: Simplify right side
    274,632.50x = 58,289,923,824.08
  5. Step 5: Solve for x
    x = 58,289,923,824.08/274,632.50
  6. Step 6: Final answer
    x = 212,247.00

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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.