Home / 313,830,515.20-470,745,772.80-98,419,417.60

Finding the Fourth Proportional to 313,830,515.20, 470,745,772.80 and 98,419,417.60

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Solution

The fourth proportional to 313,830,515.20, 470,745,772.80 and 98,419,417.60 is: 147,629,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,830,515.20 : 470,745,772.80 = 98,419,417.60 : x
  2. Step 2: Convert to fraction form
    313,830,515.20/470,745,772.80 = 98,419,417.60/x
  3. Step 3: Cross multiply
    313,830,515.20x = 470,745,772.80 × 98,419,417.60
  4. Step 4: Simplify right side
    313,830,515.20x = 46,330,524,796,637,920
  5. Step 5: Solve for x
    x = 46,330,524,796,637,920/313,830,515.20
  6. Step 6: Final answer
    x = 147,629,126.40

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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.