Home / 389,588.20-584,612.70-140,237.80

Finding the Fourth Proportional to 389,588.20, 584,612.70 and 140,237.80

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Solution

The fourth proportional to 389,588.20, 584,612.70 and 140,237.80 is: 210,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,588.20 : 584,612.70 = 140,237.80 : x
  2. Step 2: Convert to fraction form
    389,588.20/584,612.70 = 140,237.80/x
  3. Step 3: Cross multiply
    389,588.20x = 584,612.70 × 140,237.80
  4. Step 4: Simplify right side
    389,588.20x = 81,984,798,900.06
  5. Step 5: Solve for x
    x = 81,984,798,900.06/389,588.20
  6. Step 6: Final answer
    x = 210,439.64

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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.