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Finding the Fourth Proportional to 388,288.80, 582,433.20 and 308,973.60

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Solution

The fourth proportional to 388,288.80, 582,433.20 and 308,973.60 is: 463,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,288.80 : 582,433.20 = 308,973.60 : x
  2. Step 2: Convert to fraction form
    388,288.80/582,433.20 = 308,973.60/x
  3. Step 3: Cross multiply
    388,288.80x = 582,433.20 × 308,973.60
  4. Step 4: Simplify right side
    388,288.80x = 179,956,482,563.52
  5. Step 5: Solve for x
    x = 179,956,482,563.52/388,288.80
  6. Step 6: Final answer
    x = 463,460.40

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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.