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Finding the Fourth Proportional to 248,004.80, 371,978.40 and 70,539.20

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Solution

The fourth proportional to 248,004.80, 371,978.40 and 70,539.20 is: 105,800.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,004.80 : 371,978.40 = 70,539.20 : x
  2. Step 2: Convert to fraction form
    248,004.80/371,978.40 = 70,539.20/x
  3. Step 3: Cross multiply
    248,004.80x = 371,978.40 × 70,539.20
  4. Step 4: Simplify right side
    248,004.80x = 26,239,058,753.28
  5. Step 5: Solve for x
    x = 26,239,058,753.28/248,004.80
  6. Step 6: Final answer
    x = 105,800.61

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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.