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Finding the Fourth Proportional to 483,268.90, 666,911.12 and 268,428.96

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Solution

The fourth proportional to 483,268.90, 666,911.12 and 268,428.96 is: 370,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,268.90 : 666,911.12 = 268,428.96 : x
  2. Step 2: Convert to fraction form
    483,268.90/666,911.12 = 268,428.96/x
  3. Step 3: Cross multiply
    483,268.90x = 666,911.12 × 268,428.96
  4. Step 4: Simplify right side
    483,268.90x = 179,018,258,354.04
  5. Step 5: Solve for x
    x = 179,018,258,354.04/483,268.90
  6. Step 6: Final answer
    x = 370,431.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.