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Finding the Fourth Proportional to 395,357.76, 545,603.04 and 225,607.68

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Solution

The fourth proportional to 395,357.76, 545,603.04 and 225,607.68 is: 311,343.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,357.76 : 545,603.04 = 225,607.68 : x
  2. Step 2: Convert to fraction form
    395,357.76/545,603.04 = 225,607.68/x
  3. Step 3: Cross multiply
    395,357.76x = 545,603.04 × 225,607.68
  4. Step 4: Simplify right side
    395,357.76x = 123,092,236,055.35
  5. Step 5: Solve for x
    x = 123,092,236,055.35/395,357.76
  6. Step 6: Final answer
    x = 311,343.92

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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.