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Finding the Fourth Proportional to 287,460.44, 430,991.76 and 127,448.96

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Solution

The fourth proportional to 287,460.44, 430,991.76 and 127,448.96 is: 191,085.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,460.44 : 430,991.76 = 127,448.96 : x
  2. Step 2: Convert to fraction form
    287,460.44/430,991.76 = 127,448.96/x
  3. Step 3: Cross multiply
    287,460.44x = 430,991.76 × 127,448.96
  4. Step 4: Simplify right side
    287,460.44x = 54,929,451,580.57
  5. Step 5: Solve for x
    x = 54,929,451,580.57/287,460.44
  6. Step 6: Final answer
    x = 191,085.26

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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.