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Finding the Fourth Proportional to 223,360, 308,236.80 and 122,758

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Solution

The fourth proportional to 223,360, 308,236.80 and 122,758 is: 169,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,360 : 308,236.80 = 122,758 : x
  2. Step 2: Convert to fraction form
    223,360/308,236.80 = 122,758/x
  3. Step 3: Cross multiply
    223,360x = 308,236.80 × 122,758
  4. Step 4: Simplify right side
    223,360x = 37,838,533,094.40
  5. Step 5: Solve for x
    x = 37,838,533,094.40/223,360
  6. Step 6: Final answer
    x = 169,406.04

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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.