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Finding the Fourth Proportional to 305,381.73, 421,150.68 and 190,670.73

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Solution

The fourth proportional to 305,381.73, 421,150.68 and 190,670.73 is: 262,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,381.73 : 421,150.68 = 190,670.73 : x
  2. Step 2: Convert to fraction form
    305,381.73/421,150.68 = 190,670.73/x
  3. Step 3: Cross multiply
    305,381.73x = 421,150.68 × 190,670.73
  4. Step 4: Simplify right side
    305,381.73x = 80,301,107,595.60
  5. Step 5: Solve for x
    x = 80,301,107,595.60/305,381.73
  6. Step 6: Final answer
    x = 262,953.21

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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.