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Finding the Fourth Proportional to 376,870.92, 520,126.80 and 215,777.70

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Solution

The fourth proportional to 376,870.92, 520,126.80 and 215,777.70 is: 297,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,870.92 : 520,126.80 = 215,777.70 : x
  2. Step 2: Convert to fraction form
    376,870.92/520,126.80 = 215,777.70/x
  3. Step 3: Cross multiply
    376,870.92x = 520,126.80 × 215,777.70
  4. Step 4: Simplify right side
    376,870.92x = 112,231,764,612.36
  5. Step 5: Solve for x
    x = 112,231,764,612.36/376,870.92
  6. Step 6: Final answer
    x = 297,798.95

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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.