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Finding the Fourth Proportional to 286,752.72, 395,740.92 and 172,035.66

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Solution

The fourth proportional to 286,752.72, 395,740.92 and 172,035.66 is: 237,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,752.72 : 395,740.92 = 172,035.66 : x
  2. Step 2: Convert to fraction form
    286,752.72/395,740.92 = 172,035.66/x
  3. Step 3: Cross multiply
    286,752.72x = 395,740.92 × 172,035.66
  4. Step 4: Simplify right side
    286,752.72x = 68,081,550,361.21
  5. Step 5: Solve for x
    x = 68,081,550,361.21/286,752.72
  6. Step 6: Final answer
    x = 237,422.51

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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.