Home / 287,727,205.20-431,590,807.80-105,950,763.60

Finding the Fourth Proportional to 287,727,205.20, 431,590,807.80 and 105,950,763.60

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Solution

The fourth proportional to 287,727,205.20, 431,590,807.80 and 105,950,763.60 is: 158,926,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,727,205.20 : 431,590,807.80 = 105,950,763.60 : x
  2. Step 2: Convert to fraction form
    287,727,205.20/431,590,807.80 = 105,950,763.60/x
  3. Step 3: Cross multiply
    287,727,205.20x = 431,590,807.80 × 105,950,763.60
  4. Step 4: Simplify right side
    287,727,205.20x = 45,727,375,649,150,832
  5. Step 5: Solve for x
    x = 45,727,375,649,150,832/287,727,205.20
  6. Step 6: Final answer
    x = 158,926,145.40

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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.