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Finding the Fourth Proportional to 253,623.76, 380,478.84 and 127,324.24

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Solution

The fourth proportional to 253,623.76, 380,478.84 and 127,324.24 is: 191,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,623.76 : 380,478.84 = 127,324.24 : x
  2. Step 2: Convert to fraction form
    253,623.76/380,478.84 = 127,324.24/x
  3. Step 3: Cross multiply
    253,623.76x = 380,478.84 × 127,324.24
  4. Step 4: Simplify right side
    253,623.76x = 48,444,179,139.08
  5. Step 5: Solve for x
    x = 48,444,179,139.08/253,623.76
  6. Step 6: Final answer
    x = 191,008.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.