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Finding the Fourth Proportional to 255,409.89, 352,474.74 and 158,666.73

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Solution

The fourth proportional to 255,409.89, 352,474.74 and 158,666.73 is: 218,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,409.89 : 352,474.74 = 158,666.73 : x
  2. Step 2: Convert to fraction form
    255,409.89/352,474.74 = 158,666.73/x
  3. Step 3: Cross multiply
    255,409.89x = 352,474.74 × 158,666.73
  4. Step 4: Simplify right side
    255,409.89x = 55,926,014,403.40
  5. Step 5: Solve for x
    x = 55,926,014,403.40/255,409.89
  6. Step 6: Final answer
    x = 218,965.74

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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.