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Finding the Fourth Proportional to 426,153.80, 639,230.70 and 350,046.20

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Solution

The fourth proportional to 426,153.80, 639,230.70 and 350,046.20 is: 525,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,153.80 : 639,230.70 = 350,046.20 : x
  2. Step 2: Convert to fraction form
    426,153.80/639,230.70 = 350,046.20/x
  3. Step 3: Cross multiply
    426,153.80x = 639,230.70 × 350,046.20
  4. Step 4: Simplify right side
    426,153.80x = 223,760,277,458.34
  5. Step 5: Solve for x
    x = 223,760,277,458.34/426,153.80
  6. Step 6: Final answer
    x = 525,069.30

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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.