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Finding the Fourth Proportional to 276,485.60, 381,525.80 and 153,968.72

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Solution

The fourth proportional to 276,485.60, 381,525.80 and 153,968.72 is: 212,463.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,485.60 : 381,525.80 = 153,968.72 : x
  2. Step 2: Convert to fraction form
    276,485.60/381,525.80 = 153,968.72/x
  3. Step 3: Cross multiply
    276,485.60x = 381,525.80 × 153,968.72
  4. Step 4: Simplify right side
    276,485.60x = 58,743,036,395.50
  5. Step 5: Solve for x
    x = 58,743,036,395.50/276,485.60
  6. Step 6: Final answer
    x = 212,463.27

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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.