Home / 280,166.72-386,699.82-172,824.80

Finding the Fourth Proportional to 280,166.72, 386,699.82 and 172,824.80

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Solution

The fourth proportional to 280,166.72, 386,699.82 and 172,824.80 is: 238,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,166.72 : 386,699.82 = 172,824.80 : x
  2. Step 2: Convert to fraction form
    280,166.72/386,699.82 = 172,824.80/x
  3. Step 3: Cross multiply
    280,166.72x = 386,699.82 × 172,824.80
  4. Step 4: Simplify right side
    280,166.72x = 66,831,319,051.54
  5. Step 5: Solve for x
    x = 66,831,319,051.54/280,166.72
  6. Step 6: Final answer
    x = 238,541.25

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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.