Home / 386,268,139.20-579,402,208.80-204,869,611.20

Finding the Fourth Proportional to 386,268,139.20, 579,402,208.80 and 204,869,611.20

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Solution

The fourth proportional to 386,268,139.20, 579,402,208.80 and 204,869,611.20 is: 307,304,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,268,139.20 : 579,402,208.80 = 204,869,611.20 : x
  2. Step 2: Convert to fraction form
    386,268,139.20/579,402,208.80 = 204,869,611.20/x
  3. Step 3: Cross multiply
    386,268,139.20x = 579,402,208.80 × 204,869,611.20
  4. Step 4: Simplify right side
    386,268,139.20x = 118,701,905,245,277,200
  5. Step 5: Solve for x
    x = 118,701,905,245,277,200/386,268,139.20
  6. Step 6: Final answer
    x = 307,304,416.80

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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.