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Finding the Fourth Proportional to 276,196.86, 381,148.47 and 155,337.66

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Solution

The fourth proportional to 276,196.86, 381,148.47 and 155,337.66 is: 214,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,196.86 : 381,148.47 = 155,337.66 : x
  2. Step 2: Convert to fraction form
    276,196.86/381,148.47 = 155,337.66/x
  3. Step 3: Cross multiply
    276,196.86x = 381,148.47 × 155,337.66
  4. Step 4: Simplify right side
    276,196.86x = 59,206,711,442.38
  5. Step 5: Solve for x
    x = 59,206,711,442.38/276,196.86
  6. Step 6: Final answer
    x = 214,364.17

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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.