Home / 305,127.58-421,100.93-169,204.15

Finding the Fourth Proportional to 305,127.58, 421,100.93 and 169,204.15

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Solution

The fourth proportional to 305,127.58, 421,100.93 and 169,204.15 is: 233,515.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,127.58 : 421,100.93 = 169,204.15 : x
  2. Step 2: Convert to fraction form
    305,127.58/421,100.93 = 169,204.15/x
  3. Step 3: Cross multiply
    305,127.58x = 421,100.93 × 169,204.15
  4. Step 4: Simplify right side
    305,127.58x = 71,252,024,924.86
  5. Step 5: Solve for x
    x = 71,252,024,924.86/305,127.58
  6. Step 6: Final answer
    x = 233,515.52

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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.