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Finding the Fourth Proportional to 276,047.80, 380,937.10 and 155,194.16

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Solution

The fourth proportional to 276,047.80, 380,937.10 and 155,194.16 is: 214,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,047.80 : 380,937.10 = 155,194.16 : x
  2. Step 2: Convert to fraction form
    276,047.80/380,937.10 = 155,194.16/x
  3. Step 3: Cross multiply
    276,047.80x = 380,937.10 × 155,194.16
  4. Step 4: Simplify right side
    276,047.80x = 59,119,213,247.34
  5. Step 5: Solve for x
    x = 59,119,213,247.34/276,047.80
  6. Step 6: Final answer
    x = 214,162.96

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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.