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Finding the Fourth Proportional to 276,532.34, 381,651 and 155,697.18

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Solution

The fourth proportional to 276,532.34, 381,651 and 155,697.18 is: 214,882.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,532.34 : 381,651 = 155,697.18 : x
  2. Step 2: Convert to fraction form
    276,532.34/381,651 = 155,697.18/x
  3. Step 3: Cross multiply
    276,532.34x = 381,651 × 155,697.18
  4. Step 4: Simplify right side
    276,532.34x = 59,421,984,444.18
  5. Step 5: Solve for x
    x = 59,421,984,444.18/276,532.34
  6. Step 6: Final answer
    x = 214,882.59

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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.