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Finding the Fourth Proportional to 276,185.66, 381,132.58 and 155,326.90

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Solution

The fourth proportional to 276,185.66, 381,132.58 and 155,326.90 is: 214,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,185.66 : 381,132.58 = 155,326.90 : x
  2. Step 2: Convert to fraction form
    276,185.66/381,132.58 = 155,326.90/x
  3. Step 3: Cross multiply
    276,185.66x = 381,132.58 × 155,326.90
  4. Step 4: Simplify right side
    276,185.66x = 59,200,142,140.40
  5. Step 5: Solve for x
    x = 59,200,142,140.40/276,185.66
  6. Step 6: Final answer
    x = 214,349.08

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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.