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Finding the Fourth Proportional to 426,154.80, 639,232.20 and 350,047.20

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Solution

The fourth proportional to 426,154.80, 639,232.20 and 350,047.20 is: 525,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,154.80 : 639,232.20 = 350,047.20 : x
  2. Step 2: Convert to fraction form
    426,154.80/639,232.20 = 350,047.20/x
  3. Step 3: Cross multiply
    426,154.80x = 639,232.20 × 350,047.20
  4. Step 4: Simplify right side
    426,154.80x = 223,761,441,759.84
  5. Step 5: Solve for x
    x = 223,761,441,759.84/426,154.80
  6. Step 6: Final answer
    x = 525,070.80

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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.