Home / 320,828,393.32-480,413,781-221,424,764.07

Finding the Fourth Proportional to 320,828,393.32, 480,413,781 and 221,424,764.07

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Solution

The fourth proportional to 320,828,393.32, 480,413,781 and 221,424,764.07 is: 331,565,130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,393.32 : 480,413,781 = 221,424,764.07 : x
  2. Step 2: Convert to fraction form
    320,828,393.32/480,413,781 = 221,424,764.07/x
  3. Step 3: Cross multiply
    320,828,393.32x = 480,413,781 × 221,424,764.07
  4. Step 4: Simplify right side
    320,828,393.32x = 106,375,508,113,901,648
  5. Step 5: Solve for x
    x = 106,375,508,113,901,648/320,828,393.32
  6. Step 6: Final answer
    x = 331,565,130.55

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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.