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Finding the Fourth Proportional to 258,258.38, 356,372.08 and 239,215.08

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Solution

The fourth proportional to 258,258.38, 356,372.08 and 239,215.08 is: 330,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,258.38 : 356,372.08 = 239,215.08 : x
  2. Step 2: Convert to fraction form
    258,258.38/356,372.08 = 239,215.08/x
  3. Step 3: Cross multiply
    258,258.38x = 356,372.08 × 239,215.08
  4. Step 4: Simplify right side
    258,258.38x = 85,249,575,626.97
  5. Step 5: Solve for x
    x = 85,249,575,626.97/258,258.38
  6. Step 6: Final answer
    x = 330,094.13

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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.