Home / 389,628.10-584,150.55-212,335.30

Finding the Fourth Proportional to 389,628.10, 584,150.55 and 212,335.30

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Solution

The fourth proportional to 389,628.10, 584,150.55 and 212,335.30 is: 318,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,628.10 : 584,150.55 = 212,335.30 : x
  2. Step 2: Convert to fraction form
    389,628.10/584,150.55 = 212,335.30/x
  3. Step 3: Cross multiply
    389,628.10x = 584,150.55 × 212,335.30
  4. Step 4: Simplify right side
    389,628.10x = 124,035,782,279.42
  5. Step 5: Solve for x
    x = 124,035,782,279.42/389,628.10
  6. Step 6: Final answer
    x = 318,344.04

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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.