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Finding the Fourth Proportional to 272,025.30, 407,639.55 and 243,945.30

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Solution

The fourth proportional to 272,025.30, 407,639.55 and 243,945.30 is: 365,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,025.30 : 407,639.55 = 243,945.30 : x
  2. Step 2: Convert to fraction form
    272,025.30/407,639.55 = 243,945.30/x
  3. Step 3: Cross multiply
    272,025.30x = 407,639.55 × 243,945.30
  4. Step 4: Simplify right side
    272,025.30x = 99,441,752,316.62
  5. Step 5: Solve for x
    x = 99,441,752,316.62/272,025.30
  6. Step 6: Final answer
    x = 365,560.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.