Home / 388,493,312.80-582,739,969.20-101,278,976.80

Finding the Fourth Proportional to 388,493,312.80, 582,739,969.20 and 101,278,976.80

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Solution

The fourth proportional to 388,493,312.80, 582,739,969.20 and 101,278,976.80 is: 151,918,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,493,312.80 : 582,739,969.20 = 101,278,976.80 : x
  2. Step 2: Convert to fraction form
    388,493,312.80/582,739,969.20 = 101,278,976.80/x
  3. Step 3: Cross multiply
    388,493,312.80x = 582,739,969.20 × 101,278,976.80
  4. Step 4: Simplify right side
    388,493,312.80x = 59,019,307,821,039,520
  5. Step 5: Solve for x
    x = 59,019,307,821,039,520/388,493,312.80
  6. Step 6: Final answer
    x = 151,918,465.20

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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.