Home / 209,220,140.80-313,830,211.20-65,612,742.40

Finding the Fourth Proportional to 209,220,140.80, 313,830,211.20 and 65,612,742.40

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Solution

The fourth proportional to 209,220,140.80, 313,830,211.20 and 65,612,742.40 is: 98,419,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,220,140.80 : 313,830,211.20 = 65,612,742.40 : x
  2. Step 2: Convert to fraction form
    209,220,140.80/313,830,211.20 = 65,612,742.40/x
  3. Step 3: Cross multiply
    209,220,140.80x = 313,830,211.20 × 65,612,742.40
  4. Step 4: Simplify right side
    209,220,140.80x = 20,591,260,804,803,192
  5. Step 5: Solve for x
    x = 20,591,260,804,803,192/209,220,140.80
  6. Step 6: Final answer
    x = 98,419,113.60

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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.