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Finding the Fourth Proportional to 361,878.70, 542,818.05 and 328,636.30

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Solution

The fourth proportional to 361,878.70, 542,818.05 and 328,636.30 is: 492,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,878.70 : 542,818.05 = 328,636.30 : x
  2. Step 2: Convert to fraction form
    361,878.70/542,818.05 = 328,636.30/x
  3. Step 3: Cross multiply
    361,878.70x = 542,818.05 × 328,636.30
  4. Step 4: Simplify right side
    361,878.70x = 178,389,715,525.22
  5. Step 5: Solve for x
    x = 178,389,715,525.22/361,878.70
  6. Step 6: Final answer
    x = 492,954.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.