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Finding the Fourth Proportional to 389,844.36, 584,424.86 and 187,339.57

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Solution

The fourth proportional to 389,844.36, 584,424.86 and 187,339.57 is: 280,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,844.36 : 584,424.86 = 187,339.57 : x
  2. Step 2: Convert to fraction form
    389,844.36/584,424.86 = 187,339.57/x
  3. Step 3: Cross multiply
    389,844.36x = 584,424.86 × 187,339.57
  4. Step 4: Simplify right side
    389,844.36x = 109,485,899,571.95
  5. Step 5: Solve for x
    x = 109,485,899,571.95/389,844.36
  6. Step 6: Final answer
    x = 280,845.15

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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.