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Finding the Fourth Proportional to 248,630.80, 372,946.20 and 71,148.40

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Solution

The fourth proportional to 248,630.80, 372,946.20 and 71,148.40 is: 106,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,630.80 : 372,946.20 = 71,148.40 : x
  2. Step 2: Convert to fraction form
    248,630.80/372,946.20 = 71,148.40/x
  3. Step 3: Cross multiply
    248,630.80x = 372,946.20 × 71,148.40
  4. Step 4: Simplify right side
    248,630.80x = 26,534,525,416.08
  5. Step 5: Solve for x
    x = 26,534,525,416.08/248,630.80
  6. Step 6: Final answer
    x = 106,722.60

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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.