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Finding the Fourth Proportional to 286,770.36, 395,732.76 and 157,707.72

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Solution

The fourth proportional to 286,770.36, 395,732.76 and 157,707.72 is: 217,630.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,770.36 : 395,732.76 = 157,707.72 : x
  2. Step 2: Convert to fraction form
    286,770.36/395,732.76 = 157,707.72/x
  3. Step 3: Cross multiply
    286,770.36x = 395,732.76 × 157,707.72
  4. Step 4: Simplify right side
    286,770.36x = 62,410,111,308.91
  5. Step 5: Solve for x
    x = 62,410,111,308.91/286,770.36
  6. Step 6: Final answer
    x = 217,630.97

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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.