Home / 258,048,021.60-387,072,032.40-219,080,930.40

Finding the Fourth Proportional to 258,048,021.60, 387,072,032.40 and 219,080,930.40

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Solution

The fourth proportional to 258,048,021.60, 387,072,032.40 and 219,080,930.40 is: 328,621,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,048,021.60 : 387,072,032.40 = 219,080,930.40 : x
  2. Step 2: Convert to fraction form
    258,048,021.60/387,072,032.40 = 219,080,930.40/x
  3. Step 3: Cross multiply
    258,048,021.60x = 387,072,032.40 × 219,080,930.40
  4. Step 4: Simplify right side
    258,048,021.60x = 84,800,100,990,010,944
  5. Step 5: Solve for x
    x = 84,800,100,990,010,944/258,048,021.60
  6. Step 6: Final answer
    x = 328,621,395.60

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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.