Home / 258,685.60-356,989.08-145,507.36

Finding the Fourth Proportional to 258,685.60, 356,989.08 and 145,507.36

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Solution

The fourth proportional to 258,685.60, 356,989.08 and 145,507.36 is: 200,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,685.60 : 356,989.08 = 145,507.36 : x
  2. Step 2: Convert to fraction form
    258,685.60/356,989.08 = 145,507.36/x
  3. Step 3: Cross multiply
    258,685.60x = 356,989.08 × 145,507.36
  4. Step 4: Simplify right side
    258,685.60x = 51,944,538,579.63
  5. Step 5: Solve for x
    x = 51,944,538,579.63/258,685.60
  6. Step 6: Final answer
    x = 200,801.82

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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.