Home / 258,650,436.24-388,037,426.22-86,128,744.50

Finding the Fourth Proportional to 258,650,436.24, 388,037,426.22 and 86,128,744.50

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Solution

The fourth proportional to 258,650,436.24, 388,037,426.22 and 86,128,744.50 is: 129,213,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,650,436.24 : 388,037,426.22 = 86,128,744.50 : x
  2. Step 2: Convert to fraction form
    258,650,436.24/388,037,426.22 = 86,128,744.50/x
  3. Step 3: Cross multiply
    258,650,436.24x = 388,037,426.22 × 86,128,744.50
  4. Step 4: Simplify right side
    258,650,436.24x = 33,421,176,339,339,984
  5. Step 5: Solve for x
    x = 33,421,176,339,339,984/258,650,436.24
  6. Step 6: Final answer
    x = 129,213,686.34

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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.