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Finding the Fourth Proportional to 281,454.32, 388,239 and 243,662.96

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Solution

The fourth proportional to 281,454.32, 388,239 and 243,662.96 is: 336,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,454.32 : 388,239 = 243,662.96 : x
  2. Step 2: Convert to fraction form
    281,454.32/388,239 = 243,662.96/x
  3. Step 3: Cross multiply
    281,454.32x = 388,239 × 243,662.96
  4. Step 4: Simplify right side
    281,454.32x = 94,599,463,927.44
  5. Step 5: Solve for x
    x = 94,599,463,927.44/281,454.32
  6. Step 6: Final answer
    x = 336,109.48

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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.