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Finding the Fourth Proportional to 307,835.80, 460,878.90 and 272,843.80

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Solution

The fourth proportional to 307,835.80, 460,878.90 and 272,843.80 is: 408,490.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,835.80 : 460,878.90 = 272,843.80 : x
  2. Step 2: Convert to fraction form
    307,835.80/460,878.90 = 272,843.80/x
  3. Step 3: Cross multiply
    307,835.80x = 460,878.90 × 272,843.80
  4. Step 4: Simplify right side
    307,835.80x = 125,747,950,415.82
  5. Step 5: Solve for x
    x = 125,747,950,415.82/307,835.80
  6. Step 6: Final answer
    x = 408,490.34

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1.5x scale

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.