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Finding the Fourth Proportional to 258,557.50, 387,858.93 and 71,570.62

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Solution

The fourth proportional to 258,557.50, 387,858.93 and 71,570.62 is: 107,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,557.50 : 387,858.93 = 71,570.62 : x
  2. Step 2: Convert to fraction form
    258,557.50/387,858.93 = 71,570.62/x
  3. Step 3: Cross multiply
    258,557.50x = 387,858.93 × 71,570.62
  4. Step 4: Simplify right side
    258,557.50x = 27,759,304,092.64
  5. Step 5: Solve for x
    x = 27,759,304,092.64/258,557.50
  6. Step 6: Final answer
    x = 107,362.21

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1.5x scale

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.