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Finding the Fourth Proportional to 286,770.72, 395,765.76 and 172,053.68

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Solution

The fourth proportional to 286,770.72, 395,765.76 and 172,053.68 is: 237,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,770.72 : 395,765.76 = 172,053.68 : x
  2. Step 2: Convert to fraction form
    286,770.72/395,765.76 = 172,053.68/x
  3. Step 3: Cross multiply
    286,770.72x = 395,765.76 × 172,053.68
  4. Step 4: Simplify right side
    286,770.72x = 68,092,955,426.00
  5. Step 5: Solve for x
    x = 68,092,955,426.00/286,770.72
  6. Step 6: Final answer
    x = 237,447.38

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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.