Home / 258,731,772.80-388,097,659.20-105,298,851.20

Finding the Fourth Proportional to 258,731,772.80, 388,097,659.20 and 105,298,851.20

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Solution

The fourth proportional to 258,731,772.80, 388,097,659.20 and 105,298,851.20 is: 157,948,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,731,772.80 : 388,097,659.20 = 105,298,851.20 : x
  2. Step 2: Convert to fraction form
    258,731,772.80/388,097,659.20 = 105,298,851.20/x
  3. Step 3: Cross multiply
    258,731,772.80x = 388,097,659.20 × 105,298,851.20
  4. Step 4: Simplify right side
    258,731,772.80x = 40,866,237,667,169,112
  5. Step 5: Solve for x
    x = 40,866,237,667,169,112/258,731,772.80
  6. Step 6: Final answer
    x = 157,948,276.80

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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.