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Finding the Fourth Proportional to 373,754, 515,794.74 and 212,623.76

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Solution

The fourth proportional to 373,754, 515,794.74 and 212,623.76 is: 293,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,754 : 515,794.74 = 212,623.76 : x
  2. Step 2: Convert to fraction form
    373,754/515,794.74 = 212,623.76/x
  3. Step 3: Cross multiply
    373,754x = 515,794.74 × 212,623.76
  4. Step 4: Simplify right side
    373,754x = 109,670,217,007.02
  5. Step 5: Solve for x
    x = 109,670,217,007.02/373,754
  6. Step 6: Final answer
    x = 293,428.88

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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.