Home / 395,172.24-545,342.04-225,416.40

Finding the Fourth Proportional to 395,172.24, 545,342.04 and 225,416.40

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Solution

The fourth proportional to 395,172.24, 545,342.04 and 225,416.40 is: 311,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,172.24 : 545,342.04 = 225,416.40 : x
  2. Step 2: Convert to fraction form
    395,172.24/545,342.04 = 225,416.40/x
  3. Step 3: Cross multiply
    395,172.24x = 545,342.04 × 225,416.40
  4. Step 4: Simplify right side
    395,172.24x = 122,929,039,425.46
  5. Step 5: Solve for x
    x = 122,929,039,425.46/395,172.24
  6. Step 6: Final answer
    x = 311,077.11

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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.