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Finding the Fourth Proportional to 287,145.72, 430,783.39 and 95,019.65

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Solution

The fourth proportional to 287,145.72, 430,783.39 and 95,019.65 is: 142,550.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,145.72 : 430,783.39 = 95,019.65 : x
  2. Step 2: Convert to fraction form
    287,145.72/430,783.39 = 95,019.65/x
  3. Step 3: Cross multiply
    287,145.72x = 430,783.39 × 95,019.65
  4. Step 4: Simplify right side
    287,145.72x = 40,932,887,664.25
  5. Step 5: Solve for x
    x = 40,932,887,664.25/287,145.72
  6. Step 6: Final answer
    x = 142,550.93

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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.