Home / 397,864.32-548,006.83-305,807.55

Finding the Fourth Proportional to 397,864.32, 548,006.83 and 305,807.55

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Solution

The fourth proportional to 397,864.32, 548,006.83 and 305,807.55 is: 421,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,864.32 : 548,006.83 = 305,807.55 : x
  2. Step 2: Convert to fraction form
    397,864.32/548,006.83 = 305,807.55/x
  3. Step 3: Cross multiply
    397,864.32x = 548,006.83 × 305,807.55
  4. Step 4: Simplify right side
    397,864.32x = 167,584,628,048.73
  5. Step 5: Solve for x
    x = 167,584,628,048.73/397,864.32
  6. Step 6: Final answer
    x = 421,210.50

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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.