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Finding the Fourth Proportional to 287,262.97, 430,941.18 and 84,879.61

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Solution

The fourth proportional to 287,262.97, 430,941.18 and 84,879.61 is: 127,333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,262.97 : 430,941.18 = 84,879.61 : x
  2. Step 2: Convert to fraction form
    287,262.97/430,941.18 = 84,879.61/x
  3. Step 3: Cross multiply
    287,262.97x = 430,941.18 × 84,879.61
  4. Step 4: Simplify right side
    287,262.97x = 36,578,119,291.34
  5. Step 5: Solve for x
    x = 36,578,119,291.34/287,262.97
  6. Step 6: Final answer
    x = 127,333.22

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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.