Home / 276,284.87-381,242.22-155,423.66

Finding the Fourth Proportional to 276,284.87, 381,242.22 and 155,423.66

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Solution

The fourth proportional to 276,284.87, 381,242.22 and 155,423.66 is: 214,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,284.87 : 381,242.22 = 155,423.66 : x
  2. Step 2: Convert to fraction form
    276,284.87/381,242.22 = 155,423.66/x
  3. Step 3: Cross multiply
    276,284.87x = 381,242.22 × 155,423.66
  4. Step 4: Simplify right side
    276,284.87x = 59,254,059,272.71
  5. Step 5: Solve for x
    x = 59,254,059,272.71/276,284.87
  6. Step 6: Final answer
    x = 214,467.26

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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.