Home / 279,775,016.60-419,694,017.70-85,684,890.20

Finding the Fourth Proportional to 279,775,016.60, 419,694,017.70 and 85,684,890.20

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Solution

The fourth proportional to 279,775,016.60, 419,694,017.70 and 85,684,890.20 is: 128,536,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,775,016.60 : 419,694,017.70 = 85,684,890.20 : x
  2. Step 2: Convert to fraction form
    279,775,016.60/419,694,017.70 = 85,684,890.20/x
  3. Step 3: Cross multiply
    279,775,016.60x = 419,694,017.70 × 85,684,890.20
  4. Step 4: Simplify right side
    279,775,016.60x = 35,961,435,824,221,356
  5. Step 5: Solve for x
    x = 35,961,435,824,221,356/279,775,016.60
  6. Step 6: Final answer
    x = 128,536,980.40

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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.