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Finding the Fourth Proportional to 276,367.47, 381,409.53 and 155,501.70

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Solution

The fourth proportional to 276,367.47, 381,409.53 and 155,501.70 is: 214,604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,367.47 : 381,409.53 = 155,501.70 : x
  2. Step 2: Convert to fraction form
    276,367.47/381,409.53 = 155,501.70/x
  3. Step 3: Cross multiply
    276,367.47x = 381,409.53 × 155,501.70
  4. Step 4: Simplify right side
    276,367.47x = 59,309,830,311.20
  5. Step 5: Solve for x
    x = 59,309,830,311.20/276,367.47
  6. Step 6: Final answer
    x = 214,604.96

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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.