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Finding the Fourth Proportional to 313,638.86, 432,790.41 and 177,645.74

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Solution

The fourth proportional to 313,638.86, 432,790.41 and 177,645.74 is: 245,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,638.86 : 432,790.41 = 177,645.74 : x
  2. Step 2: Convert to fraction form
    313,638.86/432,790.41 = 177,645.74/x
  3. Step 3: Cross multiply
    313,638.86x = 432,790.41 × 177,645.74
  4. Step 4: Simplify right side
    313,638.86x = 76,883,372,649.35
  5. Step 5: Solve for x
    x = 76,883,372,649.35/313,638.86
  6. Step 6: Final answer
    x = 245,133.44

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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.