Home / 305,298.43-421,036.05-190,587.66

Finding the Fourth Proportional to 305,298.43, 421,036.05 and 190,587.66

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Solution

The fourth proportional to 305,298.43, 421,036.05 and 190,587.66 is: 262,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,298.43 : 421,036.05 = 190,587.66 : x
  2. Step 2: Convert to fraction form
    305,298.43/421,036.05 = 190,587.66/x
  3. Step 3: Cross multiply
    305,298.43x = 421,036.05 × 190,587.66
  4. Step 4: Simplify right side
    305,298.43x = 80,244,275,545.14
  5. Step 5: Solve for x
    x = 80,244,275,545.14/305,298.43
  6. Step 6: Final answer
    x = 262,838.81

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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.