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Finding the Fourth Proportional to 469,998.55, 648,599.43 and 255,138.85

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Solution

The fourth proportional to 469,998.55, 648,599.43 and 255,138.85 is: 352,092.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,998.55 : 648,599.43 = 255,138.85 : x
  2. Step 2: Convert to fraction form
    469,998.55/648,599.43 = 255,138.85/x
  3. Step 3: Cross multiply
    469,998.55x = 648,599.43 × 255,138.85
  4. Step 4: Simplify right side
    469,998.55x = 165,482,912,680.86
  5. Step 5: Solve for x
    x = 165,482,912,680.86/469,998.55
  6. Step 6: Final answer
    x = 352,092.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.