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Finding the Fourth Proportional to 426,234.80, 639,352.20 and 350,127.20

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Solution

The fourth proportional to 426,234.80, 639,352.20 and 350,127.20 is: 525,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,234.80 : 639,352.20 = 350,127.20 : x
  2. Step 2: Convert to fraction form
    426,234.80/639,352.20 = 350,127.20/x
  3. Step 3: Cross multiply
    426,234.80x = 639,352.20 × 350,127.20
  4. Step 4: Simplify right side
    426,234.80x = 223,854,595,599.84
  5. Step 5: Solve for x
    x = 223,854,595,599.84/426,234.80
  6. Step 6: Final answer
    x = 525,190.80

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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.