Home / 208,645,852.80-312,968,779.20-131,047,593.60

Finding the Fourth Proportional to 208,645,852.80, 312,968,779.20 and 131,047,593.60

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Solution

The fourth proportional to 208,645,852.80, 312,968,779.20 and 131,047,593.60 is: 196,571,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,645,852.80 : 312,968,779.20 = 131,047,593.60 : x
  2. Step 2: Convert to fraction form
    208,645,852.80/312,968,779.20 = 131,047,593.60/x
  3. Step 3: Cross multiply
    208,645,852.80x = 312,968,779.20 × 131,047,593.60
  4. Step 4: Simplify right side
    208,645,852.80x = 41,013,805,386,089,728
  5. Step 5: Solve for x
    x = 41,013,805,386,089,728/208,645,852.80
  6. Step 6: Final answer
    x = 196,571,390.40

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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.