Home / 305,260.95-421,285.33-169,338.72

Finding the Fourth Proportional to 305,260.95, 421,285.33 and 169,338.72

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Solution

The fourth proportional to 305,260.95, 421,285.33 and 169,338.72 is: 233,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,260.95 : 421,285.33 = 169,338.72 : x
  2. Step 2: Convert to fraction form
    305,260.95/421,285.33 = 169,338.72/x
  3. Step 3: Cross multiply
    305,260.95x = 421,285.33 × 169,338.72
  4. Step 4: Simplify right side
    305,260.95x = 71,339,915,583.86
  5. Step 5: Solve for x
    x = 71,339,915,583.86/305,260.95
  6. Step 6: Final answer
    x = 233,701.42

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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.