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Finding the Fourth Proportional to 144,980,212.80, 217,470,319.20 and 80,482,958.40

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Solution

The fourth proportional to 144,980,212.80, 217,470,319.20 and 80,482,958.40 is: 120,724,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,980,212.80 : 217,470,319.20 = 80,482,958.40 : x
  2. Step 2: Convert to fraction form
    144,980,212.80/217,470,319.20 = 80,482,958.40/x
  3. Step 3: Cross multiply
    144,980,212.80x = 217,470,319.20 × 80,482,958.40
  4. Step 4: Simplify right side
    144,980,212.80x = 17,502,654,653,408,322
  5. Step 5: Solve for x
    x = 17,502,654,653,408,322/144,980,212.80
  6. Step 6: Final answer
    x = 120,724,437.60

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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.