Home / 287,558.22-431,131.05-109,915.50

Finding the Fourth Proportional to 287,558.22, 431,131.05 and 109,915.50

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Solution

The fourth proportional to 287,558.22, 431,131.05 and 109,915.50 is: 164,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,558.22 : 431,131.05 = 109,915.50 : x
  2. Step 2: Convert to fraction form
    287,558.22/431,131.05 = 109,915.50/x
  3. Step 3: Cross multiply
    287,558.22x = 431,131.05 × 109,915.50
  4. Step 4: Simplify right side
    287,558.22x = 47,387,984,926.28
  5. Step 5: Solve for x
    x = 47,387,984,926.28/287,558.22
  6. Step 6: Final answer
    x = 164,794.40

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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.