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Finding the Fourth Proportional to 395,410.98, 545,800.23 and 240,361.74

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Solution

The fourth proportional to 395,410.98, 545,800.23 and 240,361.74 is: 331,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,410.98 : 545,800.23 = 240,361.74 : x
  2. Step 2: Convert to fraction form
    395,410.98/545,800.23 = 240,361.74/x
  3. Step 3: Cross multiply
    395,410.98x = 545,800.23 × 240,361.74
  4. Step 4: Simplify right side
    395,410.98x = 131,189,492,975.20
  5. Step 5: Solve for x
    x = 131,189,492,975.20/395,410.98
  6. Step 6: Final answer
    x = 331,780.10

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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.