Home / 276,315.68-381,314.96-155,457.04

Finding the Fourth Proportional to 276,315.68, 381,314.96 and 155,457.04

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Solution

The fourth proportional to 276,315.68, 381,314.96 and 155,457.04 is: 214,530.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,315.68 : 381,314.96 = 155,457.04 : x
  2. Step 2: Convert to fraction form
    276,315.68/381,314.96 = 155,457.04/x
  3. Step 3: Cross multiply
    276,315.68x = 381,314.96 × 155,457.04
  4. Step 4: Simplify right side
    276,315.68x = 59,278,094,989.32
  5. Step 5: Solve for x
    x = 59,278,094,989.32/276,315.68
  6. Step 6: Final answer
    x = 214,530.33

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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.