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Finding the Fourth Proportional to 243,451.36, 335,959.20 and 136,022.88

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Solution

The fourth proportional to 243,451.36, 335,959.20 and 136,022.88 is: 187,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,451.36 : 335,959.20 = 136,022.88 : x
  2. Step 2: Convert to fraction form
    243,451.36/335,959.20 = 136,022.88/x
  3. Step 3: Cross multiply
    243,451.36x = 335,959.20 × 136,022.88
  4. Step 4: Simplify right side
    243,451.36x = 45,698,137,946.50
  5. Step 5: Solve for x
    x = 45,698,137,946.50/243,451.36
  6. Step 6: Final answer
    x = 187,709.52

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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.