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Finding the Fourth Proportional to 388,008.80, 582,013.20 and 360,015.20

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Solution

The fourth proportional to 388,008.80, 582,013.20 and 360,015.20 is: 540,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,008.80 : 582,013.20 = 360,015.20 : x
  2. Step 2: Convert to fraction form
    388,008.80/582,013.20 = 360,015.20/x
  3. Step 3: Cross multiply
    388,008.80x = 582,013.20 × 360,015.20
  4. Step 4: Simplify right side
    388,008.80x = 209,533,598,600.64
  5. Step 5: Solve for x
    x = 209,533,598,600.64/388,008.80
  6. Step 6: Final answer
    x = 540,022.80

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1.5x scale

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.