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Finding the Fourth Proportional to 248,509.80, 372,813.30 and 98,724.60

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Solution

The fourth proportional to 248,509.80, 372,813.30 and 98,724.60 is: 148,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,509.80 : 372,813.30 = 98,724.60 : x
  2. Step 2: Convert to fraction form
    248,509.80/372,813.30 = 98,724.60/x
  3. Step 3: Cross multiply
    248,509.80x = 372,813.30 × 98,724.60
  4. Step 4: Simplify right side
    248,509.80x = 36,805,843,917.18
  5. Step 5: Solve for x
    x = 36,805,843,917.18/248,509.80
  6. Step 6: Final answer
    x = 148,106.21

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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.