Home / 289,706,918.40-434,560,377.60-263,347,444.80

Finding the Fourth Proportional to 289,706,918.40, 434,560,377.60 and 263,347,444.80

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Solution

The fourth proportional to 289,706,918.40, 434,560,377.60 and 263,347,444.80 is: 395,021,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,706,918.40 : 434,560,377.60 = 263,347,444.80 : x
  2. Step 2: Convert to fraction form
    289,706,918.40/434,560,377.60 = 263,347,444.80/x
  3. Step 3: Cross multiply
    289,706,918.40x = 434,560,377.60 × 263,347,444.80
  4. Step 4: Simplify right side
    289,706,918.40x = 114,440,365,052,283,168
  5. Step 5: Solve for x
    x = 114,440,365,052,283,168/289,706,918.40
  6. Step 6: Final answer
    x = 395,021,167.20

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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.