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Finding the Fourth Proportional to 521,187.60, 719,256.48 and 306,324.60

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Solution

The fourth proportional to 521,187.60, 719,256.48 and 306,324.60 is: 422,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,187.60 : 719,256.48 = 306,324.60 : x
  2. Step 2: Convert to fraction form
    521,187.60/719,256.48 = 306,324.60/x
  3. Step 3: Cross multiply
    521,187.60x = 719,256.48 × 306,324.60
  4. Step 4: Simplify right side
    521,187.60x = 220,325,953,533.41
  5. Step 5: Solve for x
    x = 220,325,953,533.41/521,187.60
  6. Step 6: Final answer
    x = 422,738.29

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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.