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Finding the Fourth Proportional to 278,235.78, 416,420.55 and 228,313.86

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Solution

The fourth proportional to 278,235.78, 416,420.55 and 228,313.86 is: 341,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,235.78 : 416,420.55 = 228,313.86 : x
  2. Step 2: Convert to fraction form
    278,235.78/416,420.55 = 228,313.86/x
  3. Step 3: Cross multiply
    278,235.78x = 416,420.55 × 228,313.86
  4. Step 4: Simplify right side
    278,235.78x = 95,074,583,153.82
  5. Step 5: Solve for x
    x = 95,074,583,153.82/278,235.78
  6. Step 6: Final answer
    x = 341,705.09

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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.