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Finding the Fourth Proportional to 427,129.88, 589,451.54 and 236,155.59

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Solution

The fourth proportional to 427,129.88, 589,451.54 and 236,155.59 is: 325,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,129.88 : 589,451.54 = 236,155.59 : x
  2. Step 2: Convert to fraction form
    427,129.88/589,451.54 = 236,155.59/x
  3. Step 3: Cross multiply
    427,129.88x = 589,451.54 × 236,155.59
  4. Step 4: Simplify right side
    427,129.88x = 139,202,275,024.33
  5. Step 5: Solve for x
    x = 139,202,275,024.33/427,129.88
  6. Step 6: Final answer
    x = 325,901.52

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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.