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Finding the Fourth Proportional to 258,157.13, 356,157 and 190,335.02

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Solution

The fourth proportional to 258,157.13, 356,157 and 190,335.02 is: 262,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,157.13 : 356,157 = 190,335.02 : x
  2. Step 2: Convert to fraction form
    258,157.13/356,157 = 190,335.02/x
  3. Step 3: Cross multiply
    258,157.13x = 356,157 × 190,335.02
  4. Step 4: Simplify right side
    258,157.13x = 67,789,147,937.36
  5. Step 5: Solve for x
    x = 67,789,147,937.36/258,157.13
  6. Step 6: Final answer
    x = 262,588.72

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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.