Home / 228,639.91-315,514.11-125,272.25

Finding the Fourth Proportional to 228,639.91, 315,514.11 and 125,272.25

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Solution

The fourth proportional to 228,639.91, 315,514.11 and 125,272.25 is: 172,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,639.91 : 315,514.11 = 125,272.25 : x
  2. Step 2: Convert to fraction form
    228,639.91/315,514.11 = 125,272.25/x
  3. Step 3: Cross multiply
    228,639.91x = 315,514.11 × 125,272.25
  4. Step 4: Simplify right side
    228,639.91x = 39,525,162,466.45
  5. Step 5: Solve for x
    x = 39,525,162,466.45/228,639.91
  6. Step 6: Final answer
    x = 172,870.79

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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.