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Finding the Fourth Proportional to 286,787.76, 429,589.80 and 168,098.64

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Solution

The fourth proportional to 286,787.76, 429,589.80 and 168,098.64 is: 251,801.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,787.76 : 429,589.80 = 168,098.64 : x
  2. Step 2: Convert to fraction form
    286,787.76/429,589.80 = 168,098.64/x
  3. Step 3: Cross multiply
    286,787.76x = 429,589.80 × 168,098.64
  4. Step 4: Simplify right side
    286,787.76x = 72,213,461,137.87
  5. Step 5: Solve for x
    x = 72,213,461,137.87/286,787.76
  6. Step 6: Final answer
    x = 251,801.06

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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.