Home / 389,730.36-537,852.78-219,902.52

Finding the Fourth Proportional to 389,730.36, 537,852.78 and 219,902.52

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Solution

The fourth proportional to 389,730.36, 537,852.78 and 219,902.52 is: 303,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,730.36 : 537,852.78 = 219,902.52 : x
  2. Step 2: Convert to fraction form
    389,730.36/537,852.78 = 219,902.52/x
  3. Step 3: Cross multiply
    389,730.36x = 537,852.78 × 219,902.52
  4. Step 4: Simplify right side
    389,730.36x = 118,275,181,711.01
  5. Step 5: Solve for x
    x = 118,275,181,711.01/389,730.36
  6. Step 6: Final answer
    x = 303,479.52

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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.