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Finding the Fourth Proportional to 613,601.40, 920,026.26 and 239,187

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Solution

The fourth proportional to 613,601.40, 920,026.26 and 239,187 is: 358,633.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,601.40 : 920,026.26 = 239,187 : x
  2. Step 2: Convert to fraction form
    613,601.40/920,026.26 = 239,187/x
  3. Step 3: Cross multiply
    613,601.40x = 920,026.26 × 239,187
  4. Step 4: Simplify right side
    613,601.40x = 220,058,321,050.62
  5. Step 5: Solve for x
    x = 220,058,321,050.62/613,601.40
  6. Step 6: Final answer
    x = 358,633.99

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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.