Home / 642,124.80-963,475.20-221,702.40

Finding the Fourth Proportional to 642,124.80, 963,475.20 and 221,702.40

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Solution

The fourth proportional to 642,124.80, 963,475.20 and 221,702.40 is: 332,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,124.80 : 963,475.20 = 221,702.40 : x
  2. Step 2: Convert to fraction form
    642,124.80/963,475.20 = 221,702.40/x
  3. Step 3: Cross multiply
    642,124.80x = 963,475.20 × 221,702.40
  4. Step 4: Simplify right side
    642,124.80x = 213,604,764,180.48
  5. Step 5: Solve for x
    x = 213,604,764,180.48/642,124.80
  6. Step 6: Final answer
    x = 332,653.04

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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.