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Finding the Fourth Proportional to 450,172.69, 621,190.90 and 268,859.45

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Solution

The fourth proportional to 450,172.69, 621,190.90 and 268,859.45 is: 370,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,172.69 : 621,190.90 = 268,859.45 : x
  2. Step 2: Convert to fraction form
    450,172.69/621,190.90 = 268,859.45/x
  3. Step 3: Cross multiply
    450,172.69x = 621,190.90 × 268,859.45
  4. Step 4: Simplify right side
    450,172.69x = 167,013,044,599.83
  5. Step 5: Solve for x
    x = 167,013,044,599.83/450,172.69
  6. Step 6: Final answer
    x = 370,997.73

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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.