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Finding the Fourth Proportional to 287,675.75, 397,039.32 and 173,070.22

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Solution

The fourth proportional to 287,675.75, 397,039.32 and 173,070.22 is: 238,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,675.75 : 397,039.32 = 173,070.22 : x
  2. Step 2: Convert to fraction form
    287,675.75/397,039.32 = 173,070.22/x
  3. Step 3: Cross multiply
    287,675.75x = 397,039.32 × 173,070.22
  4. Step 4: Simplify right side
    287,675.75x = 68,715,682,212.90
  5. Step 5: Solve for x
    x = 68,715,682,212.90/287,675.75
  6. Step 6: Final answer
    x = 238,865.05

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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.