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Finding the Fourth Proportional to 355,315.86, 490,315.01 and 194,172.12

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Solution

The fourth proportional to 355,315.86, 490,315.01 and 194,172.12 is: 267,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,315.86 : 490,315.01 = 194,172.12 : x
  2. Step 2: Convert to fraction form
    355,315.86/490,315.01 = 194,172.12/x
  3. Step 3: Cross multiply
    355,315.86x = 490,315.01 × 194,172.12
  4. Step 4: Simplify right side
    355,315.86x = 95,205,503,988.66
  5. Step 5: Solve for x
    x = 95,205,503,988.66/355,315.86
  6. Step 6: Final answer
    x = 267,946.11

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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.