Home / 240,197.30-331,505.23-138,220.68

Finding the Fourth Proportional to 240,197.30, 331,505.23 and 138,220.68

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Solution

The fourth proportional to 240,197.30, 331,505.23 and 138,220.68 is: 190,763.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,197.30 : 331,505.23 = 138,220.68 : x
  2. Step 2: Convert to fraction form
    240,197.30/331,505.23 = 138,220.68/x
  3. Step 3: Cross multiply
    240,197.30x = 331,505.23 × 138,220.68
  4. Step 4: Simplify right side
    240,197.30x = 45,820,877,994.94
  5. Step 5: Solve for x
    x = 45,820,877,994.94/240,197.30
  6. Step 6: Final answer
    x = 190,763.50

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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.