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Finding the Fourth Proportional to 268,124.77, 401,574.54 and 127,981.81

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Solution

The fourth proportional to 268,124.77, 401,574.54 and 127,981.81 is: 191,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,124.77 : 401,574.54 = 127,981.81 : x
  2. Step 2: Convert to fraction form
    268,124.77/401,574.54 = 127,981.81/x
  3. Step 3: Cross multiply
    268,124.77x = 401,574.54 × 127,981.81
  4. Step 4: Simplify right side
    268,124.77x = 51,394,236,479.12
  5. Step 5: Solve for x
    x = 51,394,236,479.12/268,124.77
  6. Step 6: Final answer
    x = 191,680.30

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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.