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Finding the Fourth Proportional to 222,312.69, 306,762.94 and 126,813.69

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Solution

The fourth proportional to 222,312.69, 306,762.94 and 126,813.69 is: 174,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,312.69 : 306,762.94 = 126,813.69 : x
  2. Step 2: Convert to fraction form
    222,312.69/306,762.94 = 126,813.69/x
  3. Step 3: Cross multiply
    222,312.69x = 306,762.94 × 126,813.69
  4. Step 4: Simplify right side
    222,312.69x = 38,901,740,376.65
  5. Step 5: Solve for x
    x = 38,901,740,376.65/222,312.69
  6. Step 6: Final answer
    x = 174,986.59

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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.