Home / 208,839,127.20-313,258,690.80-127,209,789.60

Finding the Fourth Proportional to 208,839,127.20, 313,258,690.80 and 127,209,789.60

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Solution

The fourth proportional to 208,839,127.20, 313,258,690.80 and 127,209,789.60 is: 190,814,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,839,127.20 : 313,258,690.80 = 127,209,789.60 : x
  2. Step 2: Convert to fraction form
    208,839,127.20/313,258,690.80 = 127,209,789.60/x
  3. Step 3: Cross multiply
    208,839,127.20x = 313,258,690.80 × 127,209,789.60
  4. Step 4: Simplify right side
    208,839,127.20x = 39,849,572,147,039,456
  5. Step 5: Solve for x
    x = 39,849,572,147,039,456/208,839,127.20
  6. Step 6: Final answer
    x = 190,814,684.40

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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.