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Finding the Fourth Proportional to 258,159.51, 356,298.62 and 203,586.57

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Solution

The fourth proportional to 258,159.51, 356,298.62 and 203,586.57 is: 280,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,159.51 : 356,298.62 = 203,586.57 : x
  2. Step 2: Convert to fraction form
    258,159.51/356,298.62 = 203,586.57/x
  3. Step 3: Cross multiply
    258,159.51x = 356,298.62 × 203,586.57
  4. Step 4: Simplify right side
    258,159.51x = 72,537,612,923.60
  5. Step 5: Solve for x
    x = 72,537,612,923.60/258,159.51
  6. Step 6: Final answer
    x = 280,979.82

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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.