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Finding the Fourth Proportional to 275,394.64, 380,043.54 and 154,535.64

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Solution

The fourth proportional to 275,394.64, 380,043.54 and 154,535.64 is: 213,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,394.64 : 380,043.54 = 154,535.64 : x
  2. Step 2: Convert to fraction form
    275,394.64/380,043.54 = 154,535.64/x
  3. Step 3: Cross multiply
    275,394.64x = 380,043.54 × 154,535.64
  4. Step 4: Simplify right side
    275,394.64x = 58,730,271,681.77
  5. Step 5: Solve for x
    x = 58,730,271,681.77/275,394.64
  6. Step 6: Final answer
    x = 213,258.59

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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.