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Finding the Fourth Proportional to 427,201.99, 589,538.89 and 243,435.30

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Solution

The fourth proportional to 427,201.99, 589,538.89 and 243,435.30 is: 335,940.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,201.99 : 589,538.89 = 243,435.30 : x
  2. Step 2: Convert to fraction form
    427,201.99/589,538.89 = 243,435.30/x
  3. Step 3: Cross multiply
    427,201.99x = 589,538.89 × 243,435.30
  4. Step 4: Simplify right side
    427,201.99x = 143,514,574,642.34
  5. Step 5: Solve for x
    x = 143,514,574,642.34/427,201.99
  6. Step 6: Final answer
    x = 335,940.79

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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.