Home / 287,688.33-431,678.25-191,691.16

Finding the Fourth Proportional to 287,688.33, 431,678.25 and 191,691.16

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Solution

The fourth proportional to 287,688.33, 431,678.25 and 191,691.16 is: 287,633.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,688.33 : 431,678.25 = 191,691.16 : x
  2. Step 2: Convert to fraction form
    287,688.33/431,678.25 = 191,691.16/x
  3. Step 3: Cross multiply
    287,688.33x = 431,678.25 × 191,691.16
  4. Step 4: Simplify right side
    287,688.33x = 82,748,904,489.27
  5. Step 5: Solve for x
    x = 82,748,904,489.27/287,688.33
  6. Step 6: Final answer
    x = 287,633.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.