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Finding the Fourth Proportional to 270,112.11, 405,168.47 and 70,432.33

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Solution

The fourth proportional to 270,112.11, 405,168.47 and 70,432.33 is: 105,648.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,112.11 : 405,168.47 = 70,432.33 : x
  2. Step 2: Convert to fraction form
    270,112.11/405,168.47 = 70,432.33/x
  3. Step 3: Cross multiply
    270,112.11x = 405,168.47 × 70,432.33
  4. Step 4: Simplify right side
    270,112.11x = 28,536,959,384.64
  5. Step 5: Solve for x
    x = 28,536,959,384.64/270,112.11
  6. Step 6: Final answer
    x = 105,648.57

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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.