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Finding the Fourth Proportional to 295,973,999.80, 443,960,999.70 and 290,872,166.20

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Solution

The fourth proportional to 295,973,999.80, 443,960,999.70 and 290,872,166.20 is: 436,308,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,973,999.80 : 443,960,999.70 = 290,872,166.20 : x
  2. Step 2: Convert to fraction form
    295,973,999.80/443,960,999.70 = 290,872,166.20/x
  3. Step 3: Cross multiply
    295,973,999.80x = 443,960,999.70 × 290,872,166.20
  4. Step 4: Simplify right side
    295,973,999.80x = 129,135,897,691,056,544
  5. Step 5: Solve for x
    x = 129,135,897,691,056,544/295,973,999.80
  6. Step 6: Final answer
    x = 436,308,249.30

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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.