Home / 287,455.37-396,688.39-166,666.82

Finding the Fourth Proportional to 287,455.37, 396,688.39 and 166,666.82

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Solution

The fourth proportional to 287,455.37, 396,688.39 and 166,666.82 is: 230,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,455.37 : 396,688.39 = 166,666.82 : x
  2. Step 2: Convert to fraction form
    287,455.37/396,688.39 = 166,666.82/x
  3. Step 3: Cross multiply
    287,455.37x = 396,688.39 × 166,666.82
  4. Step 4: Simplify right side
    287,455.37x = 66,114,790,092.11
  5. Step 5: Solve for x
    x = 66,114,790,092.11/287,455.37
  6. Step 6: Final answer
    x = 230,000.20

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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.