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Finding the Fourth Proportional to 276,289.46, 381,270.93 and 155,437.46

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Solution

The fourth proportional to 276,289.46, 381,270.93 and 155,437.46 is: 214,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,289.46 : 381,270.93 = 155,437.46 : x
  2. Step 2: Convert to fraction form
    276,289.46/381,270.93 = 155,437.46/x
  3. Step 3: Cross multiply
    276,289.46x = 381,270.93 × 155,437.46
  4. Step 4: Simplify right side
    276,289.46x = 59,263,784,931.04
  5. Step 5: Solve for x
    x = 59,263,784,931.04/276,289.46
  6. Step 6: Final answer
    x = 214,498.90

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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.