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Finding the Fourth Proportional to 258,696.70, 357,000.12 and 145,520.26

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Solution

The fourth proportional to 258,696.70, 357,000.12 and 145,520.26 is: 200,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,696.70 : 357,000.12 = 145,520.26 : x
  2. Step 2: Convert to fraction form
    258,696.70/357,000.12 = 145,520.26/x
  3. Step 3: Cross multiply
    258,696.70x = 357,000.12 × 145,520.26
  4. Step 4: Simplify right side
    258,696.70x = 51,950,750,282.43
  5. Step 5: Solve for x
    x = 51,950,750,282.43/258,696.70
  6. Step 6: Final answer
    x = 200,817.21

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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.