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Finding the Fourth Proportional to 388,399.24, 582,598.90 and 118,528.80

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Solution

The fourth proportional to 388,399.24, 582,598.90 and 118,528.80 is: 177,793.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,399.24 : 582,598.90 = 118,528.80 : x
  2. Step 2: Convert to fraction form
    388,399.24/582,598.90 = 118,528.80/x
  3. Step 3: Cross multiply
    388,399.24x = 582,598.90 × 118,528.80
  4. Step 4: Simplify right side
    388,399.24x = 69,054,748,498.32
  5. Step 5: Solve for x
    x = 69,054,748,498.32/388,399.24
  6. Step 6: Final answer
    x = 177,793.21

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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.