Home / 300,905.28-415,102.32-253,141.20

Finding the Fourth Proportional to 300,905.28, 415,102.32 and 253,141.20

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Solution

The fourth proportional to 300,905.28, 415,102.32 and 253,141.20 is: 349,211.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,905.28 : 415,102.32 = 253,141.20 : x
  2. Step 2: Convert to fraction form
    300,905.28/415,102.32 = 253,141.20/x
  3. Step 3: Cross multiply
    300,905.28x = 415,102.32 × 253,141.20
  4. Step 4: Simplify right side
    300,905.28x = 105,079,499,407.58
  5. Step 5: Solve for x
    x = 105,079,499,407.58/300,905.28
  6. Step 6: Final answer
    x = 349,211.22

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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.