Home / 320,828,390.90-480,413,777.36-221,424,761.64

Finding the Fourth Proportional to 320,828,390.90, 480,413,777.36 and 221,424,761.64

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Solution

The fourth proportional to 320,828,390.90, 480,413,777.36 and 221,424,761.64 is: 331,565,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,390.90 : 480,413,777.36 = 221,424,761.64 : x
  2. Step 2: Convert to fraction form
    320,828,390.90/480,413,777.36 = 221,424,761.64/x
  3. Step 3: Cross multiply
    320,828,390.90x = 480,413,777.36 × 221,424,761.64
  4. Step 4: Simplify right side
    320,828,390.90x = 106,375,506,141,204,464
  5. Step 5: Solve for x
    x = 106,375,506,141,204,464/320,828,390.90
  6. Step 6: Final answer
    x = 331,565,126.90

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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.