Home / 268,948.40-403,422.60-81,969.20

Finding the Fourth Proportional to 268,948.40, 403,422.60 and 81,969.20

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Solution

The fourth proportional to 268,948.40, 403,422.60 and 81,969.20 is: 122,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,948.40 : 403,422.60 = 81,969.20 : x
  2. Step 2: Convert to fraction form
    268,948.40/403,422.60 = 81,969.20/x
  3. Step 3: Cross multiply
    268,948.40x = 403,422.60 × 81,969.20
  4. Step 4: Simplify right side
    268,948.40x = 33,068,227,783.92
  5. Step 5: Solve for x
    x = 33,068,227,783.92/268,948.40
  6. Step 6: Final answer
    x = 122,953.80

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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.