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Finding the Fourth Proportional to 268,699.40, 370,858.20 and 154,055.06

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Solution

The fourth proportional to 268,699.40, 370,858.20 and 154,055.06 is: 212,626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,699.40 : 370,858.20 = 154,055.06 : x
  2. Step 2: Convert to fraction form
    268,699.40/370,858.20 = 154,055.06/x
  3. Step 3: Cross multiply
    268,699.40x = 370,858.20 × 154,055.06
  4. Step 4: Simplify right side
    268,699.40x = 57,132,582,252.49
  5. Step 5: Solve for x
    x = 57,132,582,252.49/268,699.40
  6. Step 6: Final answer
    x = 212,626.39

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1.5x scale

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.