Home / 255,678,725.21-352,743,957.47-209,464,615.85

Finding the Fourth Proportional to 255,678,725.21, 352,743,957.47 and 209,464,615.85

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Solution

The fourth proportional to 255,678,725.21, 352,743,957.47 and 209,464,615.85 is: 288,985,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,678,725.21 : 352,743,957.47 = 209,464,615.85 : x
  2. Step 2: Convert to fraction form
    255,678,725.21/352,743,957.47 = 209,464,615.85/x
  3. Step 3: Cross multiply
    255,678,725.21x = 352,743,957.47 × 209,464,615.85
  4. Step 4: Simplify right side
    255,678,725.21x = 73,887,377,543,622,240
  5. Step 5: Solve for x
    x = 73,887,377,543,622,240/255,678,725.21
  6. Step 6: Final answer
    x = 288,985,239.13

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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.