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Finding the Fourth Proportional to 287,358.80, 396,603.40 and 166,575.64

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Solution

The fourth proportional to 287,358.80, 396,603.40 and 166,575.64 is: 229,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,358.80 : 396,603.40 = 166,575.64 : x
  2. Step 2: Convert to fraction form
    287,358.80/396,603.40 = 166,575.64/x
  3. Step 3: Cross multiply
    287,358.80x = 396,603.40 × 166,575.64
  4. Step 4: Simplify right side
    287,358.80x = 66,064,465,181.18
  5. Step 5: Solve for x
    x = 66,064,465,181.18/287,358.80
  6. Step 6: Final answer
    x = 229,902.36

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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.