Home / 258,713,531.80-388,105,727.10-86,172,353.80

Finding the Fourth Proportional to 258,713,531.80, 388,105,727.10 and 86,172,353.80

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Solution

The fourth proportional to 258,713,531.80, 388,105,727.10 and 86,172,353.80 is: 129,270,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,713,531.80 : 388,105,727.10 = 86,172,353.80 : x
  2. Step 2: Convert to fraction form
    258,713,531.80/388,105,727.10 = 86,172,353.80/x
  3. Step 3: Cross multiply
    258,713,531.80x = 388,105,727.10 × 86,172,353.80
  4. Step 4: Simplify right side
    258,713,531.80x = 33,443,984,027,467,448
  5. Step 5: Solve for x
    x = 33,443,984,027,467,448/258,713,531.80
  6. Step 6: Final answer
    x = 129,270,331.53

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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.