Home / 305,131.57-421,106.51-169,208.14

Finding the Fourth Proportional to 305,131.57, 421,106.51 and 169,208.14

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Solution

The fourth proportional to 305,131.57, 421,106.51 and 169,208.14 is: 233,521.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,131.57 : 421,106.51 = 169,208.14 : x
  2. Step 2: Convert to fraction form
    305,131.57/421,106.51 = 169,208.14/x
  3. Step 3: Cross multiply
    305,131.57x = 421,106.51 × 169,208.14
  4. Step 4: Simplify right side
    305,131.57x = 71,254,649,298.99
  5. Step 5: Solve for x
    x = 71,254,649,298.99/305,131.57
  6. Step 6: Final answer
    x = 233,521.07

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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.