Home / 287,380,292.40-431,070,438.60-196,681,028.40

Finding the Fourth Proportional to 287,380,292.40, 431,070,438.60 and 196,681,028.40

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Solution

The fourth proportional to 287,380,292.40, 431,070,438.60 and 196,681,028.40 is: 295,021,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,380,292.40 : 431,070,438.60 = 196,681,028.40 : x
  2. Step 2: Convert to fraction form
    287,380,292.40/431,070,438.60 = 196,681,028.40/x
  3. Step 3: Cross multiply
    287,380,292.40x = 431,070,438.60 × 196,681,028.40
  4. Step 4: Simplify right side
    287,380,292.40x = 84,783,377,176,687,056
  5. Step 5: Solve for x
    x = 84,783,377,176,687,056/287,380,292.40
  6. Step 6: Final answer
    x = 295,021,542.60

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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.