Home / 258,721.98-357,032.25-143,999.25

Finding the Fourth Proportional to 258,721.98, 357,032.25 and 143,999.25

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Solution

The fourth proportional to 258,721.98, 357,032.25 and 143,999.25 is: 198,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,721.98 : 357,032.25 = 143,999.25 : x
  2. Step 2: Convert to fraction form
    258,721.98/357,032.25 = 143,999.25/x
  3. Step 3: Cross multiply
    258,721.98x = 357,032.25 × 143,999.25
  4. Step 4: Simplify right side
    258,721.98x = 51,412,376,225.81
  5. Step 5: Solve for x
    x = 51,412,376,225.81/258,721.98
  6. Step 6: Final answer
    x = 198,716.69

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1.5x scale

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.