Home / 258,463,027-387,697,916.58-85,939,840.72

Finding the Fourth Proportional to 258,463,027, 387,697,916.58 and 85,939,840.72

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Solution

The fourth proportional to 258,463,027, 387,697,916.58 and 85,939,840.72 is: 128,910,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,463,027 : 387,697,916.58 = 85,939,840.72 : x
  2. Step 2: Convert to fraction form
    258,463,027/387,697,916.58 = 85,939,840.72/x
  3. Step 3: Cross multiply
    258,463,027x = 387,697,916.58 × 85,939,840.72
  4. Step 4: Simplify right side
    258,463,027x = 33,318,697,198,361,044
  5. Step 5: Solve for x
    x = 33,318,697,198,361,044/258,463,027
  6. Step 6: Final answer
    x = 128,910,883.64

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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.