Home / 305,834.61-458,201.79-287,822.36

Finding the Fourth Proportional to 305,834.61, 458,201.79 and 287,822.36

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Solution

The fourth proportional to 305,834.61, 458,201.79 and 287,822.36 is: 431,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,834.61 : 458,201.79 = 287,822.36 : x
  2. Step 2: Convert to fraction form
    305,834.61/458,201.79 = 287,822.36/x
  3. Step 3: Cross multiply
    305,834.61x = 458,201.79 × 287,822.36
  4. Step 4: Simplify right side
    305,834.61x = 131,880,717,990.47
  5. Step 5: Solve for x
    x = 131,880,717,990.47/305,834.61
  6. Step 6: Final answer
    x = 431,215.81

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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.