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Finding the Fourth Proportional to 308,571.37, 462,690.61 and 139,999.71

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Solution

The fourth proportional to 308,571.37, 462,690.61 and 139,999.71 is: 209,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,571.37 : 462,690.61 = 139,999.71 : x
  2. Step 2: Convert to fraction form
    308,571.37/462,690.61 = 139,999.71/x
  3. Step 3: Cross multiply
    308,571.37x = 462,690.61 × 139,999.71
  4. Step 4: Simplify right side
    308,571.37x = 64,776,551,219.72
  5. Step 5: Solve for x
    x = 64,776,551,219.72/308,571.37
  6. Step 6: Final answer
    x = 209,924.05

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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.