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Finding the Fourth Proportional to 276,633.50, 381,750.47 and 155,776.23

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Solution

The fourth proportional to 276,633.50, 381,750.47 and 155,776.23 is: 214,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,633.50 : 381,750.47 = 155,776.23 : x
  2. Step 2: Convert to fraction form
    276,633.50/381,750.47 = 155,776.23/x
  3. Step 3: Cross multiply
    276,633.50x = 381,750.47 × 155,776.23
  4. Step 4: Simplify right side
    276,633.50x = 59,467,648,822.61
  5. Step 5: Solve for x
    x = 59,467,648,822.61/276,633.50
  6. Step 6: Final answer
    x = 214,969.08

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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.