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Finding the Fourth Proportional to 395,446.80, 545,770.89 and 242,457.95

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Solution

The fourth proportional to 395,446.80, 545,770.89 and 242,457.95 is: 334,625.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,446.80 : 545,770.89 = 242,457.95 : x
  2. Step 2: Convert to fraction form
    395,446.80/545,770.89 = 242,457.95/x
  3. Step 3: Cross multiply
    395,446.80x = 545,770.89 × 242,457.95
  4. Step 4: Simplify right side
    395,446.80x = 132,326,488,430.22
  5. Step 5: Solve for x
    x = 132,326,488,430.22/395,446.80
  6. Step 6: Final answer
    x = 334,625.26

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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.