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Finding the Fourth Proportional to 388,002.80, 582,004.20 and 360,009.20

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Solution

The fourth proportional to 388,002.80, 582,004.20 and 360,009.20 is: 540,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,002.80 : 582,004.20 = 360,009.20 : x
  2. Step 2: Convert to fraction form
    388,002.80/582,004.20 = 360,009.20/x
  3. Step 3: Cross multiply
    388,002.80x = 582,004.20 × 360,009.20
  4. Step 4: Simplify right side
    388,002.80x = 209,526,866,438.64
  5. Step 5: Solve for x
    x = 209,526,866,438.64/388,002.80
  6. Step 6: Final answer
    x = 540,013.80

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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.