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Finding the Fourth Proportional to 257,852.70, 356,645.43 and 228,044.70

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Solution

The fourth proportional to 257,852.70, 356,645.43 and 228,044.70 is: 315,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,852.70 : 356,645.43 = 228,044.70 : x
  2. Step 2: Convert to fraction form
    257,852.70/356,645.43 = 228,044.70/x
  3. Step 3: Cross multiply
    257,852.70x = 356,645.43 × 228,044.70
  4. Step 4: Simplify right side
    257,852.70x = 81,331,100,090.72
  5. Step 5: Solve for x
    x = 81,331,100,090.72/257,852.70
  6. Step 6: Final answer
    x = 315,416.90

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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.