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Finding the Fourth Proportional to 320,699.44, 442,445.88 and 247,133.56

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Solution

The fourth proportional to 320,699.44, 442,445.88 and 247,133.56 is: 340,952.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,699.44 : 442,445.88 = 247,133.56 : x
  2. Step 2: Convert to fraction form
    320,699.44/442,445.88 = 247,133.56/x
  3. Step 3: Cross multiply
    320,699.44x = 442,445.88 × 247,133.56
  4. Step 4: Simplify right side
    320,699.44x = 109,343,225,431.73
  5. Step 5: Solve for x
    x = 109,343,225,431.73/320,699.44
  6. Step 6: Final answer
    x = 340,952.34

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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.