Home / 258,866,808.40-388,300,212.60-218,052,139.60

Finding the Fourth Proportional to 258,866,808.40, 388,300,212.60 and 218,052,139.60

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Solution

The fourth proportional to 258,866,808.40, 388,300,212.60 and 218,052,139.60 is: 327,078,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,866,808.40 : 388,300,212.60 = 218,052,139.60 : x
  2. Step 2: Convert to fraction form
    258,866,808.40/388,300,212.60 = 218,052,139.60/x
  3. Step 3: Cross multiply
    258,866,808.40x = 388,300,212.60 × 218,052,139.60
  4. Step 4: Simplify right side
    258,866,808.40x = 84,669,692,164,564,880
  5. Step 5: Solve for x
    x = 84,669,692,164,564,880/258,866,808.40
  6. Step 6: Final answer
    x = 327,078,209.40

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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.