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Finding the Fourth Proportional to 258,514.70, 356,750.27 and 145,338.26

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Solution

The fourth proportional to 258,514.70, 356,750.27 and 145,338.26 is: 200,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,514.70 : 356,750.27 = 145,338.26 : x
  2. Step 2: Convert to fraction form
    258,514.70/356,750.27 = 145,338.26/x
  3. Step 3: Cross multiply
    258,514.70x = 356,750.27 × 145,338.26
  4. Step 4: Simplify right side
    258,514.70x = 51,849,460,985.89
  5. Step 5: Solve for x
    x = 51,849,460,985.89/258,514.70
  6. Step 6: Final answer
    x = 200,566.78

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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.