Home / 309,738.48-426,986.66-218,934.24

Finding the Fourth Proportional to 309,738.48, 426,986.66 and 218,934.24

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Solution

The fourth proportional to 309,738.48, 426,986.66 and 218,934.24 is: 301,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,738.48 : 426,986.66 = 218,934.24 : x
  2. Step 2: Convert to fraction form
    309,738.48/426,986.66 = 218,934.24/x
  3. Step 3: Cross multiply
    309,738.48x = 426,986.66 × 218,934.24
  4. Step 4: Simplify right side
    309,738.48x = 93,481,999,897.24
  5. Step 5: Solve for x
    x = 93,481,999,897.24/309,738.48
  6. Step 6: Final answer
    x = 301,809.45

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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.