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Finding the Fourth Proportional to 333,112.80, 499,496.40 and 122,642.40

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Solution

The fourth proportional to 333,112.80, 499,496.40 and 122,642.40 is: 183,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,112.80 : 499,496.40 = 122,642.40 : x
  2. Step 2: Convert to fraction form
    333,112.80/499,496.40 = 122,642.40/x
  3. Step 3: Cross multiply
    333,112.80x = 499,496.40 × 122,642.40
  4. Step 4: Simplify right side
    333,112.80x = 61,259,437,287.36
  5. Step 5: Solve for x
    x = 61,259,437,287.36/333,112.80
  6. Step 6: Final answer
    x = 183,899.98

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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.