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Finding the Fourth Proportional to 258,891,028.80, 388,485,842.40 and 97,448,827.20

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Solution

The fourth proportional to 258,891,028.80, 388,485,842.40 and 97,448,827.20 is: 146,229,438.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,891,028.80 : 388,485,842.40 = 97,448,827.20 : x
  2. Step 2: Convert to fraction form
    258,891,028.80/388,485,842.40 = 97,448,827.20/x
  3. Step 3: Cross multiply
    258,891,028.80x = 388,485,842.40 × 97,448,827.20
  4. Step 4: Simplify right side
    258,891,028.80x = 37,857,489,725,684,032
  5. Step 5: Solve for x
    x = 37,857,489,725,684,032/258,891,028.80
  6. Step 6: Final answer
    x = 146,229,438.31

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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.