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Finding the Fourth Proportional to 395,302.70, 545,295.02 and 250,063.49

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Solution

The fourth proportional to 395,302.70, 545,295.02 and 250,063.49 is: 344,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,302.70 : 545,295.02 = 250,063.49 : x
  2. Step 2: Convert to fraction form
    395,302.70/545,295.02 = 250,063.49/x
  3. Step 3: Cross multiply
    395,302.70x = 545,295.02 × 250,063.49
  4. Step 4: Simplify right side
    395,302.70x = 136,358,371,804.03
  5. Step 5: Solve for x
    x = 136,358,371,804.03/395,302.70
  6. Step 6: Final answer
    x = 344,946.73

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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.