Home / 208,009,830.40-312,014,745.60-100,514,406.40

Finding the Fourth Proportional to 208,009,830.40, 312,014,745.60 and 100,514,406.40

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Solution

The fourth proportional to 208,009,830.40, 312,014,745.60 and 100,514,406.40 is: 150,771,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,830.40 : 312,014,745.60 = 100,514,406.40 : x
  2. Step 2: Convert to fraction form
    208,009,830.40/312,014,745.60 = 100,514,406.40/x
  3. Step 3: Cross multiply
    208,009,830.40x = 312,014,745.60 × 100,514,406.40
  4. Step 4: Simplify right side
    208,009,830.40x = 31,361,976,942,031,016
  5. Step 5: Solve for x
    x = 31,361,976,942,031,016/208,009,830.40
  6. Step 6: Final answer
    x = 150,771,609.60

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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.