Home / 276,248.40-381,218.93-155,389.69

Finding the Fourth Proportional to 276,248.40, 381,218.93 and 155,389.69

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Solution

The fourth proportional to 276,248.40, 381,218.93 and 155,389.69 is: 214,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,248.40 : 381,218.93 = 155,389.69 : x
  2. Step 2: Convert to fraction form
    276,248.40/381,218.93 = 155,389.69/x
  3. Step 3: Cross multiply
    276,248.40x = 381,218.93 × 155,389.69
  4. Step 4: Simplify right side
    276,248.40x = 59,237,492,074.15
  5. Step 5: Solve for x
    x = 59,237,492,074.15/276,248.40
  6. Step 6: Final answer
    x = 214,435.60

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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.