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Finding the Fourth Proportional to 273,978.28, 378,088.72 and 153,119.44

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Solution

The fourth proportional to 273,978.28, 378,088.72 and 153,119.44 is: 211,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,978.28 : 378,088.72 = 153,119.44 : x
  2. Step 2: Convert to fraction form
    273,978.28/378,088.72 = 153,119.44/x
  3. Step 3: Cross multiply
    273,978.28x = 378,088.72 × 153,119.44
  4. Step 4: Simplify right side
    273,978.28x = 57,892,733,076.72
  5. Step 5: Solve for x
    x = 57,892,733,076.72/273,978.28
  6. Step 6: Final answer
    x = 211,304.10

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1.5x scale

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.