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Finding the Fourth Proportional to 276,034.32, 380,900.88 and 155,147.76

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Solution

The fourth proportional to 276,034.32, 380,900.88 and 155,147.76 is: 214,089.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,034.32 : 380,900.88 = 155,147.76 : x
  2. Step 2: Convert to fraction form
    276,034.32/380,900.88 = 155,147.76/x
  3. Step 3: Cross multiply
    276,034.32x = 380,900.88 × 155,147.76
  4. Step 4: Simplify right side
    276,034.32x = 59,095,918,314.03
  5. Step 5: Solve for x
    x = 59,095,918,314.03/276,034.32
  6. Step 6: Final answer
    x = 214,089.02

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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.