Home / 305,682.10-421,548.15-196,675.19

Finding the Fourth Proportional to 305,682.10, 421,548.15 and 196,675.19

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Solution

The fourth proportional to 305,682.10, 421,548.15 and 196,675.19 is: 271,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,682.10 : 421,548.15 = 196,675.19 : x
  2. Step 2: Convert to fraction form
    305,682.10/421,548.15 = 196,675.19/x
  3. Step 3: Cross multiply
    305,682.10x = 421,548.15 × 196,675.19
  4. Step 4: Simplify right side
    305,682.10x = 82,908,062,495.40
  5. Step 5: Solve for x
    x = 82,908,062,495.40/305,682.10
  6. Step 6: Final answer
    x = 271,223.15

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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.