Home / 388,530,209.80-582,720,665.10-115,909,870.60

Finding the Fourth Proportional to 388,530,209.80, 582,720,665.10 and 115,909,870.60

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Solution

The fourth proportional to 388,530,209.80, 582,720,665.10 and 115,909,870.60 is: 173,842,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530,209.80 : 582,720,665.10 = 115,909,870.60 : x
  2. Step 2: Convert to fraction form
    388,530,209.80/582,720,665.10 = 115,909,870.60/x
  3. Step 3: Cross multiply
    388,530,209.80x = 582,720,665.10 × 115,909,870.60
  4. Step 4: Simplify right side
    388,530,209.80x = 67,543,076,887,686,936
  5. Step 5: Solve for x
    x = 67,543,076,887,686,936/388,530,209.80
  6. Step 6: Final answer
    x = 173,842,535.75

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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.