Home / 320,828,433.12-480,413,840.40-221,424,804

Finding the Fourth Proportional to 320,828,433.12, 480,413,840.40 and 221,424,804

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Solution

The fourth proportional to 320,828,433.12, 480,413,840.40 and 221,424,804 is: 331,565,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,433.12 : 480,413,840.40 = 221,424,804 : x
  2. Step 2: Convert to fraction form
    320,828,433.12/480,413,840.40 = 221,424,804/x
  3. Step 3: Cross multiply
    320,828,433.12x = 480,413,840.40 × 221,424,804
  4. Step 4: Simplify right side
    320,828,433.12x = 106,375,540,449,457,280
  5. Step 5: Solve for x
    x = 106,375,540,449,457,280/320,828,433.12
  6. Step 6: Final answer
    x = 331,565,190.20

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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.