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Finding the Fourth Proportional to 287,415.72, 396,603.36 and 166,594.90

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Solution

The fourth proportional to 287,415.72, 396,603.36 and 166,594.90 is: 229,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,415.72 : 396,603.36 = 166,594.90 : x
  2. Step 2: Convert to fraction form
    287,415.72/396,603.36 = 166,594.90/x
  3. Step 3: Cross multiply
    287,415.72x = 396,603.36 × 166,594.90
  4. Step 4: Simplify right side
    287,415.72x = 66,072,097,098.86
  5. Step 5: Solve for x
    x = 66,072,097,098.86/287,415.72
  6. Step 6: Final answer
    x = 229,883.38

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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.