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Finding the Fourth Proportional to 286,654.64, 395,478.60 and 173,436.08

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Solution

The fourth proportional to 286,654.64, 395,478.60 and 173,436.08 is: 239,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,654.64 : 395,478.60 = 173,436.08 : x
  2. Step 2: Convert to fraction form
    286,654.64/395,478.60 = 173,436.08/x
  3. Step 3: Cross multiply
    286,654.64x = 395,478.60 × 173,436.08
  4. Step 4: Simplify right side
    286,654.64x = 68,590,258,107.89
  5. Step 5: Solve for x
    x = 68,590,258,107.89/286,654.64
  6. Step 6: Final answer
    x = 239,278.38

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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.