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Finding the Fourth Proportional to 172,600.20, 258,900.30 and 47,941.20

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Solution

The fourth proportional to 172,600.20, 258,900.30 and 47,941.20 is: 71,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,600.20 : 258,900.30 = 47,941.20 : x
  2. Step 2: Convert to fraction form
    172,600.20/258,900.30 = 47,941.20/x
  3. Step 3: Cross multiply
    172,600.20x = 258,900.30 × 47,941.20
  4. Step 4: Simplify right side
    172,600.20x = 12,411,991,062.36
  5. Step 5: Solve for x
    x = 12,411,991,062.36/172,600.20
  6. Step 6: Final answer
    x = 71,911.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.