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Finding the Fourth Proportional to 276,321.48, 381,323.54 and 153,811.20

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Solution

The fourth proportional to 276,321.48, 381,323.54 and 153,811.20 is: 212,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,321.48 : 381,323.54 = 153,811.20 : x
  2. Step 2: Convert to fraction form
    276,321.48/381,323.54 = 153,811.20/x
  3. Step 3: Cross multiply
    276,321.48x = 381,323.54 × 153,811.20
  4. Step 4: Simplify right side
    276,321.48x = 58,651,830,568.93
  5. Step 5: Solve for x
    x = 58,651,830,568.93/276,321.48
  6. Step 6: Final answer
    x = 212,259.40

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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.