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Finding the Fourth Proportional to 287,169.74, 430,754.49 and 76,802.21

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Solution

The fourth proportional to 287,169.74, 430,754.49 and 76,802.21 is: 115,203.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,169.74 : 430,754.49 = 76,802.21 : x
  2. Step 2: Convert to fraction form
    287,169.74/430,754.49 = 76,802.21/x
  3. Step 3: Cross multiply
    287,169.74x = 430,754.49 × 76,802.21
  4. Step 4: Simplify right side
    287,169.74x = 33,082,896,260.98
  5. Step 5: Solve for x
    x = 33,082,896,260.98/287,169.74
  6. Step 6: Final answer
    x = 115,203.28

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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.