Home / 305,132.07-421,107.20-169,208.64

Finding the Fourth Proportional to 305,132.07, 421,107.20 and 169,208.64

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Solution

The fourth proportional to 305,132.07, 421,107.20 and 169,208.64 is: 233,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,132.07 : 421,107.20 = 169,208.64 : x
  2. Step 2: Convert to fraction form
    305,132.07/421,107.20 = 169,208.64/x
  3. Step 3: Cross multiply
    305,132.07x = 421,107.20 × 169,208.64
  4. Step 4: Simplify right side
    305,132.07x = 71,254,976,606.21
  5. Step 5: Solve for x
    x = 71,254,976,606.21/305,132.07
  6. Step 6: Final answer
    x = 233,521.76

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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.