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Finding the Fourth Proportional to 243,621.76, 336,199.32 and 136,196.32

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Solution

The fourth proportional to 243,621.76, 336,199.32 and 136,196.32 is: 187,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,621.76 : 336,199.32 = 136,196.32 : x
  2. Step 2: Convert to fraction form
    243,621.76/336,199.32 = 136,196.32/x
  3. Step 3: Cross multiply
    243,621.76x = 336,199.32 × 136,196.32
  4. Step 4: Simplify right side
    243,621.76x = 45,789,110,170.50
  5. Step 5: Solve for x
    x = 45,789,110,170.50/243,621.76
  6. Step 6: Final answer
    x = 187,951.64

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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.