Home / 289,448,487.40-434,040,020.70-127,807,220.20

Finding the Fourth Proportional to 289,448,487.40, 434,040,020.70 and 127,807,220.20

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Solution

The fourth proportional to 289,448,487.40, 434,040,020.70 and 127,807,220.20 is: 191,652,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,448,487.40 : 434,040,020.70 = 127,807,220.20 : x
  2. Step 2: Convert to fraction form
    289,448,487.40/434,040,020.70 = 127,807,220.20/x
  3. Step 3: Cross multiply
    289,448,487.40x = 434,040,020.70 × 127,807,220.20
  4. Step 4: Simplify right side
    289,448,487.40x = 55,473,448,501,217,456
  5. Step 5: Solve for x
    x = 55,473,448,501,217,456/289,448,487.40
  6. Step 6: Final answer
    x = 191,652,231.45

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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.