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Finding the Fourth Proportional to 384,801.32, 531,026.54 and 215,035.44

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Solution

The fourth proportional to 384,801.32, 531,026.54 and 215,035.44 is: 296,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,801.32 : 531,026.54 = 215,035.44 : x
  2. Step 2: Convert to fraction form
    384,801.32/531,026.54 = 215,035.44/x
  3. Step 3: Cross multiply
    384,801.32x = 531,026.54 × 215,035.44
  4. Step 4: Simplify right side
    384,801.32x = 114,189,524,605.40
  5. Step 5: Solve for x
    x = 114,189,524,605.40/384,801.32
  6. Step 6: Final answer
    x = 296,749.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.