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Finding the Fourth Proportional to 239,970.96, 331,200.36 and 139,427.28

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Solution

The fourth proportional to 239,970.96, 331,200.36 and 139,427.28 is: 192,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,970.96 : 331,200.36 = 139,427.28 : x
  2. Step 2: Convert to fraction form
    239,970.96/331,200.36 = 139,427.28/x
  3. Step 3: Cross multiply
    239,970.96x = 331,200.36 × 139,427.28
  4. Step 4: Simplify right side
    239,970.96x = 46,178,365,329.82
  5. Step 5: Solve for x
    x = 46,178,365,329.82/239,970.96
  6. Step 6: Final answer
    x = 192,433.14

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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.