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Finding the Fourth Proportional to 245,999.20, 369,085.20 and 105,800.80

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Solution

The fourth proportional to 245,999.20, 369,085.20 and 105,800.80 is: 158,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,999.20 : 369,085.20 = 105,800.80 : x
  2. Step 2: Convert to fraction form
    245,999.20/369,085.20 = 105,800.80/x
  3. Step 3: Cross multiply
    245,999.20x = 369,085.20 × 105,800.80
  4. Step 4: Simplify right side
    245,999.20x = 39,049,509,428.16
  5. Step 5: Solve for x
    x = 39,049,509,428.16/245,999.20
  6. Step 6: Final answer
    x = 158,738.36

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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.