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Finding the Fourth Proportional to 352,428.48, 486,358.56 and 199,466.66

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Solution

The fourth proportional to 352,428.48, 486,358.56 and 199,466.66 is: 275,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,428.48 : 486,358.56 = 199,466.66 : x
  2. Step 2: Convert to fraction form
    352,428.48/486,358.56 = 199,466.66/x
  3. Step 3: Cross multiply
    352,428.48x = 486,358.56 × 199,466.66
  4. Step 4: Simplify right side
    352,428.48x = 97,012,316,528.28
  5. Step 5: Solve for x
    x = 97,012,316,528.28/352,428.48
  6. Step 6: Final answer
    x = 275,268.10

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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.