Home / 389,612.20-584,418.30-223,263.40

Finding the Fourth Proportional to 389,612.20, 584,418.30 and 223,263.40

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Solution

The fourth proportional to 389,612.20, 584,418.30 and 223,263.40 is: 334,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,612.20 : 584,418.30 = 223,263.40 : x
  2. Step 2: Convert to fraction form
    389,612.20/584,418.30 = 223,263.40/x
  3. Step 3: Cross multiply
    389,612.20x = 584,418.30 × 223,263.40
  4. Step 4: Simplify right side
    389,612.20x = 130,479,216,680.22
  5. Step 5: Solve for x
    x = 130,479,216,680.22/389,612.20
  6. Step 6: Final answer
    x = 334,895.10

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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.