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Finding the Fourth Proportional to 228,319.58, 315,207.72 and 137,698.61

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Solution

The fourth proportional to 228,319.58, 315,207.72 and 137,698.61 is: 190,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,319.58 : 315,207.72 = 137,698.61 : x
  2. Step 2: Convert to fraction form
    228,319.58/315,207.72 = 137,698.61/x
  3. Step 3: Cross multiply
    228,319.58x = 315,207.72 × 137,698.61
  4. Step 4: Simplify right side
    228,319.58x = 43,403,663,329.23
  5. Step 5: Solve for x
    x = 43,403,663,329.23/228,319.58
  6. Step 6: Final answer
    x = 190,100.48

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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.