Home / 281,025-421,486.02-81,296.28

Finding the Fourth Proportional to 281,025, 421,486.02 and 81,296.28

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Solution

The fourth proportional to 281,025, 421,486.02 and 81,296.28 is: 121,929.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,025 : 421,486.02 = 81,296.28 : x
  2. Step 2: Convert to fraction form
    281,025/421,486.02 = 81,296.28/x
  3. Step 3: Cross multiply
    281,025x = 421,486.02 × 81,296.28
  4. Step 4: Simplify right side
    281,025x = 34,265,245,498.01
  5. Step 5: Solve for x
    x = 34,265,245,498.01/281,025
  6. Step 6: Final answer
    x = 121,929.53

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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.