Home / 276,289.16-381,278.44-155,430.52

Finding the Fourth Proportional to 276,289.16, 381,278.44 and 155,430.52

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Solution

The fourth proportional to 276,289.16, 381,278.44 and 155,430.52 is: 214,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,289.16 : 381,278.44 = 155,430.52 : x
  2. Step 2: Convert to fraction form
    276,289.16/381,278.44 = 155,430.52/x
  3. Step 3: Cross multiply
    276,289.16x = 381,278.44 × 155,430.52
  4. Step 4: Simplify right side
    276,289.16x = 59,262,306,193.99
  5. Step 5: Solve for x
    x = 59,262,306,193.99/276,289.16
  6. Step 6: Final answer
    x = 214,493.78

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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.