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Finding the Fourth Proportional to 243,436.80, 365,242.68 and 214,218.48

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Solution

The fourth proportional to 243,436.80, 365,242.68 and 214,218.48 is: 321,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,436.80 : 365,242.68 = 214,218.48 : x
  2. Step 2: Convert to fraction form
    243,436.80/365,242.68 = 214,218.48/x
  3. Step 3: Cross multiply
    243,436.80x = 365,242.68 × 214,218.48
  4. Step 4: Simplify right side
    243,436.80x = 78,241,731,740.73
  5. Step 5: Solve for x
    x = 78,241,731,740.73/243,436.80
  6. Step 6: Final answer
    x = 321,404.70

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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.