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Finding the Fourth Proportional to 258,575.06, 356,866.08 and 145,397

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Solution

The fourth proportional to 258,575.06, 356,866.08 and 145,397 is: 200,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,575.06 : 356,866.08 = 145,397 : x
  2. Step 2: Convert to fraction form
    258,575.06/356,866.08 = 145,397/x
  3. Step 3: Cross multiply
    258,575.06x = 356,866.08 × 145,397
  4. Step 4: Simplify right side
    258,575.06x = 51,887,257,433.76
  5. Step 5: Solve for x
    x = 51,887,257,433.76/258,575.06
  6. Step 6: Final answer
    x = 200,666.13

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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.