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Finding the Fourth Proportional to 395,451.51, 545,733.08 and 242,574

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Solution

The fourth proportional to 395,451.51, 545,733.08 and 242,574 is: 334,758.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,451.51 : 545,733.08 = 242,574 : x
  2. Step 2: Convert to fraction form
    395,451.51/545,733.08 = 242,574/x
  3. Step 3: Cross multiply
    395,451.51x = 545,733.08 × 242,574
  4. Step 4: Simplify right side
    395,451.51x = 132,380,656,147.92
  5. Step 5: Solve for x
    x = 132,380,656,147.92/395,451.51
  6. Step 6: Final answer
    x = 334,758.25

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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.