Home / 389,631.83-584,481.02-136,890.36

Finding the Fourth Proportional to 389,631.83, 584,481.02 and 136,890.36

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Solution

The fourth proportional to 389,631.83, 584,481.02 and 136,890.36 is: 205,347.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,631.83 : 584,481.02 = 136,890.36 : x
  2. Step 2: Convert to fraction form
    389,631.83/584,481.02 = 136,890.36/x
  3. Step 3: Cross multiply
    389,631.83x = 584,481.02 × 136,890.36
  4. Step 4: Simplify right side
    389,631.83x = 80,009,816,556.52
  5. Step 5: Solve for x
    x = 80,009,816,556.52/389,631.83
  6. Step 6: Final answer
    x = 205,347.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.