Home / 287,257.31-430,983.01-127,311.37

Finding the Fourth Proportional to 287,257.31, 430,983.01 and 127,311.37

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Solution

The fourth proportional to 287,257.31, 430,983.01 and 127,311.37 is: 191,010.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,257.31 : 430,983.01 = 127,311.37 : x
  2. Step 2: Convert to fraction form
    287,257.31/430,983.01 = 127,311.37/x
  3. Step 3: Cross multiply
    287,257.31x = 430,983.01 × 127,311.37
  4. Step 4: Simplify right side
    287,257.31x = 54,869,036,531.51
  5. Step 5: Solve for x
    x = 54,869,036,531.51/287,257.31
  6. Step 6: Final answer
    x = 191,010.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.