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Finding the Fourth Proportional to 381,381.92, 526,248.60 and 228,384.28

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Solution

The fourth proportional to 381,381.92, 526,248.60 and 228,384.28 is: 315,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,381.92 : 526,248.60 = 228,384.28 : x
  2. Step 2: Convert to fraction form
    381,381.92/526,248.60 = 228,384.28/x
  3. Step 3: Cross multiply
    381,381.92x = 526,248.60 × 228,384.28
  4. Step 4: Simplify right side
    381,381.92x = 120,186,907,612.01
  5. Step 5: Solve for x
    x = 120,186,907,612.01/381,381.92
  6. Step 6: Final answer
    x = 315,135.30

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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.