Home / 305,191,490.40-457,815,229.20-100,720,015.20

Finding the Fourth Proportional to 305,191,490.40, 457,815,229.20 and 100,720,015.20

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Solution

The fourth proportional to 305,191,490.40, 457,815,229.20 and 100,720,015.20 is: 151,089,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,191,490.40 : 457,815,229.20 = 100,720,015.20 : x
  2. Step 2: Convert to fraction form
    305,191,490.40/457,815,229.20 = 100,720,015.20/x
  3. Step 3: Cross multiply
    305,191,490.40x = 457,815,229.20 × 100,720,015.20
  4. Step 4: Simplify right side
    305,191,490.40x = 46,111,156,843,815,488
  5. Step 5: Solve for x
    x = 46,111,156,843,815,488/305,191,490.40
  6. Step 6: Final answer
    x = 151,089,261.31

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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.