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Finding the Fourth Proportional to 223,792.80, 308,841.02 and 121,825.05

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Solution

The fourth proportional to 223,792.80, 308,841.02 and 121,825.05 is: 168,122.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,792.80 : 308,841.02 = 121,825.05 : x
  2. Step 2: Convert to fraction form
    223,792.80/308,841.02 = 121,825.05/x
  3. Step 3: Cross multiply
    223,792.80x = 308,841.02 × 121,825.05
  4. Step 4: Simplify right side
    223,792.80x = 37,624,572,703.55
  5. Step 5: Solve for x
    x = 37,624,572,703.55/223,792.80
  6. Step 6: Final answer
    x = 168,122.36

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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.