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Finding the Fourth Proportional to 258,162.32, 356,262.84 and 143,459.64

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Solution

The fourth proportional to 258,162.32, 356,262.84 and 143,459.64 is: 197,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,162.32 : 356,262.84 = 143,459.64 : x
  2. Step 2: Convert to fraction form
    258,162.32/356,262.84 = 143,459.64/x
  3. Step 3: Cross multiply
    258,162.32x = 356,262.84 × 143,459.64
  4. Step 4: Simplify right side
    258,162.32x = 51,109,338,771.78
  5. Step 5: Solve for x
    x = 51,109,338,771.78/258,162.32
  6. Step 6: Final answer
    x = 197,973.66

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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.