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Finding the Fourth Proportional to 389,980.37, 584,587.83 and 200,531.50

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Solution

The fourth proportional to 389,980.37, 584,587.83 and 200,531.50 is: 300,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,980.37 : 584,587.83 = 200,531.50 : x
  2. Step 2: Convert to fraction form
    389,980.37/584,587.83 = 200,531.50/x
  3. Step 3: Cross multiply
    389,980.37x = 584,587.83 × 200,531.50
  4. Step 4: Simplify right side
    389,980.37x = 117,228,273,722.17
  5. Step 5: Solve for x
    x = 117,228,273,722.17/389,980.37
  6. Step 6: Final answer
    x = 300,600.45

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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.