Home / 258,726,643.80-388,089,965.70-105,293,722.20

Finding the Fourth Proportional to 258,726,643.80, 388,089,965.70 and 105,293,722.20

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Solution

The fourth proportional to 258,726,643.80, 388,089,965.70 and 105,293,722.20 is: 157,940,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,726,643.80 : 388,089,965.70 = 105,293,722.20 : x
  2. Step 2: Convert to fraction form
    258,726,643.80/388,089,965.70 = 105,293,722.20/x
  3. Step 3: Cross multiply
    258,726,643.80x = 388,089,965.70 × 105,293,722.20
  4. Step 4: Simplify right side
    258,726,643.80x = 40,863,437,037,023,328
  5. Step 5: Solve for x
    x = 40,863,437,037,023,328/258,726,643.80
  6. Step 6: Final answer
    x = 157,940,583.30

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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.