Home / 258,428.72-356,613.36-145,268.48

Finding the Fourth Proportional to 258,428.72, 356,613.36 and 145,268.48

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Solution

The fourth proportional to 258,428.72, 356,613.36 and 145,268.48 is: 200,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,428.72 : 356,613.36 = 145,268.48 : x
  2. Step 2: Convert to fraction form
    258,428.72/356,613.36 = 145,268.48/x
  3. Step 3: Cross multiply
    258,428.72x = 356,613.36 × 145,268.48
  4. Step 4: Simplify right side
    258,428.72x = 51,804,680,754.89
  5. Step 5: Solve for x
    x = 51,804,680,754.89/258,428.72
  6. Step 6: Final answer
    x = 200,460.23

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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.