Home / 287,569.11-396,798.70-166,686.78

Finding the Fourth Proportional to 287,569.11, 396,798.70 and 166,686.78

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Solution

The fourth proportional to 287,569.11, 396,798.70 and 166,686.78 is: 230,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,569.11 : 396,798.70 = 166,686.78 : x
  2. Step 2: Convert to fraction form
    287,569.11/396,798.70 = 166,686.78/x
  3. Step 3: Cross multiply
    287,569.11x = 396,798.70 × 166,686.78
  4. Step 4: Simplify right side
    287,569.11x = 66,141,096,777.75
  5. Step 5: Solve for x
    x = 66,141,096,777.75/287,569.11
  6. Step 6: Final answer
    x = 230,000.70

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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.