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Finding the Fourth Proportional to 268,267.50, 401,788.89 and 128,124.54

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Solution

The fourth proportional to 268,267.50, 401,788.89 and 128,124.54 is: 191,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,267.50 : 401,788.89 = 128,124.54 : x
  2. Step 2: Convert to fraction form
    268,267.50/401,788.89 = 128,124.54/x
  3. Step 3: Cross multiply
    268,267.50x = 401,788.89 × 128,124.54
  4. Step 4: Simplify right side
    268,267.50x = 51,479,016,708.36
  5. Step 5: Solve for x
    x = 51,479,016,708.36/268,267.50
  6. Step 6: Final answer
    x = 191,894.35

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1.5x scale

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.