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Finding the Fourth Proportional to 258,648.46, 356,938.04 and 145,471.21

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Solution

The fourth proportional to 258,648.46, 356,938.04 and 145,471.21 is: 200,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,648.46 : 356,938.04 = 145,471.21 : x
  2. Step 2: Convert to fraction form
    258,648.46/356,938.04 = 145,471.21/x
  3. Step 3: Cross multiply
    258,648.46x = 356,938.04 × 145,471.21
  4. Step 4: Simplify right side
    258,648.46x = 51,924,208,045.16
  5. Step 5: Solve for x
    x = 51,924,208,045.16/258,648.46
  6. Step 6: Final answer
    x = 200,752.05

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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.