Home / 307,946.23-421,879.29-296,432.88

Finding the Fourth Proportional to 307,946.23, 421,879.29 and 296,432.88

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Solution

The fourth proportional to 307,946.23, 421,879.29 and 296,432.88 is: 406,106.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,946.23 : 421,879.29 = 296,432.88 : x
  2. Step 2: Convert to fraction form
    307,946.23/421,879.29 = 296,432.88/x
  3. Step 3: Cross multiply
    307,946.23x = 421,879.29 × 296,432.88
  4. Step 4: Simplify right side
    307,946.23x = 125,058,889,355.49
  5. Step 5: Solve for x
    x = 125,058,889,355.49/307,946.23
  6. Step 6: Final answer
    x = 406,106.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.