Home / 268,967.20-403,472.88-81,980.32

Finding the Fourth Proportional to 268,967.20, 403,472.88 and 81,980.32

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Solution

The fourth proportional to 268,967.20, 403,472.88 and 81,980.32 is: 122,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,967.20 : 403,472.88 = 81,980.32 : x
  2. Step 2: Convert to fraction form
    268,967.20/403,472.88 = 81,980.32/x
  3. Step 3: Cross multiply
    268,967.20x = 403,472.88 × 81,980.32
  4. Step 4: Simplify right side
    268,967.20x = 33,076,835,813.72
  5. Step 5: Solve for x
    x = 33,076,835,813.72/268,967.20
  6. Step 6: Final answer
    x = 122,977.21

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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.