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Finding the Fourth Proportional to 268,690.40, 370,845.78 and 154,046.06

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Solution

The fourth proportional to 268,690.40, 370,845.78 and 154,046.06 is: 212,613.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,690.40 : 370,845.78 = 154,046.06 : x
  2. Step 2: Convert to fraction form
    268,690.40/370,845.78 = 154,046.06/x
  3. Step 3: Cross multiply
    268,690.40x = 370,845.78 × 154,046.06
  4. Step 4: Simplify right side
    268,690.40x = 57,127,331,276.63
  5. Step 5: Solve for x
    x = 57,127,331,276.63/268,690.40
  6. Step 6: Final answer
    x = 212,613.96

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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.