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Finding the Fourth Proportional to 276,005.23, 380,889.32 and 153,499.32

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Solution

The fourth proportional to 276,005.23, 380,889.32 and 153,499.32 is: 211,830.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,005.23 : 380,889.32 = 153,499.32 : x
  2. Step 2: Convert to fraction form
    276,005.23/380,889.32 = 153,499.32/x
  3. Step 3: Cross multiply
    276,005.23x = 380,889.32 × 153,499.32
  4. Step 4: Simplify right side
    276,005.23x = 58,466,251,999.01
  5. Step 5: Solve for x
    x = 58,466,251,999.01/276,005.23
  6. Step 6: Final answer
    x = 211,830.23

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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.