Home / 860,180.31-1,290,240.90-220,490.28

Finding the Fourth Proportional to 860,180.31, 1,290,240.90 and 220,490.28

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Solution

The fourth proportional to 860,180.31, 1,290,240.90 and 220,490.28 is: 330,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,180.31 : 1,290,240.90 = 220,490.28 : x
  2. Step 2: Convert to fraction form
    860,180.31/1,290,240.90 = 220,490.28/x
  3. Step 3: Cross multiply
    860,180.31x = 1,290,240.90 × 220,490.28
  4. Step 4: Simplify right side
    860,180.31x = 284,485,577,308.45
  5. Step 5: Solve for x
    x = 284,485,577,308.45/860,180.31
  6. Step 6: Final answer
    x = 330,727.84

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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.