Home / 390,659,503.52-539,107,986.42-214,450,496.89

Finding the Fourth Proportional to 390,659,503.52, 539,107,986.42 and 214,450,496.89

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Solution

The fourth proportional to 390,659,503.52, 539,107,986.42 and 214,450,496.89 is: 295,940,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,659,503.52 : 539,107,986.42 = 214,450,496.89 : x
  2. Step 2: Convert to fraction form
    390,659,503.52/539,107,986.42 = 214,450,496.89/x
  3. Step 3: Cross multiply
    390,659,503.52x = 539,107,986.42 × 214,450,496.89
  4. Step 4: Simplify right side
    390,659,503.52x = 115,611,975,565,136,352
  5. Step 5: Solve for x
    x = 115,611,975,565,136,352/390,659,503.52
  6. Step 6: Final answer
    x = 295,940,517.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.