Home / 389,531.20-584,296.80-221,569.60

Finding the Fourth Proportional to 389,531.20, 584,296.80 and 221,569.60

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Solution

The fourth proportional to 389,531.20, 584,296.80 and 221,569.60 is: 332,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,531.20 : 584,296.80 = 221,569.60 : x
  2. Step 2: Convert to fraction form
    389,531.20/584,296.80 = 221,569.60/x
  3. Step 3: Cross multiply
    389,531.20x = 584,296.80 × 221,569.60
  4. Step 4: Simplify right side
    389,531.20x = 129,462,408,257.28
  5. Step 5: Solve for x
    x = 129,462,408,257.28/389,531.20
  6. Step 6: Final answer
    x = 332,354.40

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1.5x scale

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.