Home / 389,820.20-584,276.70-179,479.40

Finding the Fourth Proportional to 389,820.20, 584,276.70 and 179,479.40

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Solution

The fourth proportional to 389,820.20, 584,276.70 and 179,479.40 is: 269,010.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,820.20 : 584,276.70 = 179,479.40 : x
  2. Step 2: Convert to fraction form
    389,820.20/584,276.70 = 179,479.40/x
  3. Step 3: Cross multiply
    389,820.20x = 584,276.70 × 179,479.40
  4. Step 4: Simplify right side
    389,820.20x = 104,865,631,549.98
  5. Step 5: Solve for x
    x = 104,865,631,549.98/389,820.20
  6. Step 6: Final answer
    x = 269,010.26

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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.