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Finding the Fourth Proportional to 258,528.96, 356,866.56 and 151,133.40

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Solution

The fourth proportional to 258,528.96, 356,866.56 and 151,133.40 is: 208,620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,528.96 : 356,866.56 = 151,133.40 : x
  2. Step 2: Convert to fraction form
    258,528.96/356,866.56 = 151,133.40/x
  3. Step 3: Cross multiply
    258,528.96x = 356,866.56 × 151,133.40
  4. Step 4: Simplify right side
    258,528.96x = 53,934,456,559.10
  5. Step 5: Solve for x
    x = 53,934,456,559.10/258,528.96
  6. Step 6: Final answer
    x = 208,620.56

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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.