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Finding the Fourth Proportional to 363,643,801.20, 545,146,837.20 and 218,135,255.40

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Solution

The fourth proportional to 363,643,801.20, 545,146,837.20 and 218,135,255.40 is: 327,011,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,643,801.20 : 545,146,837.20 = 218,135,255.40 : x
  2. Step 2: Convert to fraction form
    363,643,801.20/545,146,837.20 = 218,135,255.40/x
  3. Step 3: Cross multiply
    363,643,801.20x = 545,146,837.20 × 218,135,255.40
  4. Step 4: Simplify right side
    363,643,801.20x = 118,915,744,563,124,240
  5. Step 5: Solve for x
    x = 118,915,744,563,124,240/363,643,801.20
  6. Step 6: Final answer
    x = 327,011,609.08

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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.