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Finding the Fourth Proportional to 268,662.19, 370,806.79 and 154,017.79

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Solution

The fourth proportional to 268,662.19, 370,806.79 and 154,017.79 is: 212,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,662.19 : 370,806.79 = 154,017.79 : x
  2. Step 2: Convert to fraction form
    268,662.19/370,806.79 = 154,017.79/x
  3. Step 3: Cross multiply
    268,662.19x = 370,806.79 × 154,017.79
  4. Step 4: Simplify right side
    268,662.19x = 57,110,844,081.26
  5. Step 5: Solve for x
    x = 57,110,844,081.26/268,662.19
  6. Step 6: Final answer
    x = 212,574.93

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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.