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Finding the Fourth Proportional to 395,189.55, 545,156.15 and 242,263.58

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Solution

The fourth proportional to 395,189.55, 545,156.15 and 242,263.58 is: 334,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,189.55 : 545,156.15 = 242,263.58 : x
  2. Step 2: Convert to fraction form
    395,189.55/545,156.15 = 242,263.58/x
  3. Step 3: Cross multiply
    395,189.55x = 545,156.15 × 242,263.58
  4. Step 4: Simplify right side
    395,189.55x = 132,071,476,620.92
  5. Step 5: Solve for x
    x = 132,071,476,620.92/395,189.55
  6. Step 6: Final answer
    x = 334,197.80

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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.