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Finding the Fourth Proportional to 381,476.16, 526,532.04 and 220,424.40

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Solution

The fourth proportional to 381,476.16, 526,532.04 and 220,424.40 is: 304,240.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,476.16 : 526,532.04 = 220,424.40 : x
  2. Step 2: Convert to fraction form
    381,476.16/526,532.04 = 220,424.40/x
  3. Step 3: Cross multiply
    381,476.16x = 526,532.04 × 220,424.40
  4. Step 4: Simplify right side
    381,476.16x = 116,060,508,997.78
  5. Step 5: Solve for x
    x = 116,060,508,997.78/381,476.16
  6. Step 6: Final answer
    x = 304,240.53

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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.