Home / 262,943,999.20-394,415,998.80-142,011,647.20

Finding the Fourth Proportional to 262,943,999.20, 394,415,998.80 and 142,011,647.20

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Solution

The fourth proportional to 262,943,999.20, 394,415,998.80 and 142,011,647.20 is: 213,017,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,943,999.20 : 394,415,998.80 = 142,011,647.20 : x
  2. Step 2: Convert to fraction form
    262,943,999.20/394,415,998.80 = 142,011,647.20/x
  3. Step 3: Cross multiply
    262,943,999.20x = 394,415,998.80 × 142,011,647.20
  4. Step 4: Simplify right side
    262,943,999.20x = 56,011,665,671,621,224
  5. Step 5: Solve for x
    x = 56,011,665,671,621,224/262,943,999.20
  6. Step 6: Final answer
    x = 213,017,470.80

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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.