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Finding the Fourth Proportional to 662,385.20, 993,650.70 and 213,029.60

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Solution

The fourth proportional to 662,385.20, 993,650.70 and 213,029.60 is: 319,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,385.20 : 993,650.70 = 213,029.60 : x
  2. Step 2: Convert to fraction form
    662,385.20/993,650.70 = 213,029.60/x
  3. Step 3: Cross multiply
    662,385.20x = 993,650.70 × 213,029.60
  4. Step 4: Simplify right side
    662,385.20x = 211,677,011,160.72
  5. Step 5: Solve for x
    x = 211,677,011,160.72/662,385.20
  6. Step 6: Final answer
    x = 319,567.85

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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.