Home / 426,168.20-639,252.30-293,457.80

Finding the Fourth Proportional to 426,168.20, 639,252.30 and 293,457.80

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Solution

The fourth proportional to 426,168.20, 639,252.30 and 293,457.80 is: 440,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,168.20 : 639,252.30 = 293,457.80 : x
  2. Step 2: Convert to fraction form
    426,168.20/639,252.30 = 293,457.80/x
  3. Step 3: Cross multiply
    426,168.20x = 639,252.30 × 293,457.80
  4. Step 4: Simplify right side
    426,168.20x = 187,593,573,602.94
  5. Step 5: Solve for x
    x = 187,593,573,602.94/426,168.20
  6. Step 6: Final answer
    x = 440,186.70

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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.