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Finding the Fourth Proportional to 276,499.54, 381,492.93 and 155,633.77

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Solution

The fourth proportional to 276,499.54, 381,492.93 and 155,633.77 is: 214,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,499.54 : 381,492.93 = 155,633.77 : x
  2. Step 2: Convert to fraction form
    276,499.54/381,492.93 = 155,633.77/x
  3. Step 3: Cross multiply
    276,499.54x = 381,492.93 × 155,633.77
  4. Step 4: Simplify right side
    276,499.54x = 59,373,182,924.25
  5. Step 5: Solve for x
    x = 59,373,182,924.25/276,499.54
  6. Step 6: Final answer
    x = 214,731.58

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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.