Home / 221,293,871.20-331,940,806.80-67,939,681.60

Finding the Fourth Proportional to 221,293,871.20, 331,940,806.80 and 67,939,681.60

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Solution

The fourth proportional to 221,293,871.20, 331,940,806.80 and 67,939,681.60 is: 101,909,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,293,871.20 : 331,940,806.80 = 67,939,681.60 : x
  2. Step 2: Convert to fraction form
    221,293,871.20/331,940,806.80 = 67,939,681.60/x
  3. Step 3: Cross multiply
    221,293,871.20x = 331,940,806.80 × 67,939,681.60
  4. Step 4: Simplify right side
    221,293,871.20x = 22,551,952,724,039,112
  5. Step 5: Solve for x
    x = 22,551,952,724,039,112/221,293,871.20
  6. Step 6: Final answer
    x = 101,909,522.40

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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.