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Finding the Fourth Proportional to 286,662.78, 429,994.27 and 84,258.93

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Solution

The fourth proportional to 286,662.78, 429,994.27 and 84,258.93 is: 126,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,662.78 : 429,994.27 = 84,258.93 : x
  2. Step 2: Convert to fraction form
    286,662.78/429,994.27 = 84,258.93/x
  3. Step 3: Cross multiply
    286,662.78x = 429,994.27 × 84,258.93
  4. Step 4: Simplify right side
    286,662.78x = 36,230,856,885.68
  5. Step 5: Solve for x
    x = 36,230,856,885.68/286,662.78
  6. Step 6: Final answer
    x = 126,388.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.