Home / 278,021.20-417,420.60-173,045.20

Finding the Fourth Proportional to 278,021.20, 417,420.60 and 173,045.20

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Solution

The fourth proportional to 278,021.20, 417,420.60 and 173,045.20 is: 259,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,021.20 : 417,420.60 = 173,045.20 : x
  2. Step 2: Convert to fraction form
    278,021.20/417,420.60 = 173,045.20/x
  3. Step 3: Cross multiply
    278,021.20x = 417,420.60 × 173,045.20
  4. Step 4: Simplify right side
    278,021.20x = 72,232,631,211.12
  5. Step 5: Solve for x
    x = 72,232,631,211.12/278,021.20
  6. Step 6: Final answer
    x = 259,809.80

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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.