Home / 389,486.36-537,516.06-219,658.52

Finding the Fourth Proportional to 389,486.36, 537,516.06 and 219,658.52

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Solution

The fourth proportional to 389,486.36, 537,516.06 and 219,658.52 is: 303,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,486.36 : 537,516.06 = 219,658.52 : x
  2. Step 2: Convert to fraction form
    389,486.36/537,516.06 = 219,658.52/x
  3. Step 3: Cross multiply
    389,486.36x = 537,516.06 × 219,658.52
  4. Step 4: Simplify right side
    389,486.36x = 118,069,982,215.83
  5. Step 5: Solve for x
    x = 118,069,982,215.83/389,486.36
  6. Step 6: Final answer
    x = 303,142.79

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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.