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Finding the Fourth Proportional to 453,994.86, 680,990.40 and 138,450.84

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Solution

The fourth proportional to 453,994.86, 680,990.40 and 138,450.84 is: 207,675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,994.86 : 680,990.40 = 138,450.84 : x
  2. Step 2: Convert to fraction form
    453,994.86/680,990.40 = 138,450.84/x
  3. Step 3: Cross multiply
    453,994.86x = 680,990.40 × 138,450.84
  4. Step 4: Simplify right side
    453,994.86x = 94,283,692,911.94
  5. Step 5: Solve for x
    x = 94,283,692,911.94/453,994.86
  6. Step 6: Final answer
    x = 207,675.68

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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.