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Finding the Fourth Proportional to 454,415.90, 681,623.85 and 155,234.30

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Solution

The fourth proportional to 454,415.90, 681,623.85 and 155,234.30 is: 232,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,415.90 : 681,623.85 = 155,234.30 : x
  2. Step 2: Convert to fraction form
    454,415.90/681,623.85 = 155,234.30/x
  3. Step 3: Cross multiply
    454,415.90x = 681,623.85 × 155,234.30
  4. Step 4: Simplify right side
    454,415.90x = 105,811,401,218.06
  5. Step 5: Solve for x
    x = 105,811,401,218.06/454,415.90
  6. Step 6: Final answer
    x = 232,851.45

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Similar ratio
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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.