Home / 354,078,015.40-531,117,023.10-172,679,487.40

Finding the Fourth Proportional to 354,078,015.40, 531,117,023.10 and 172,679,487.40

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Solution

The fourth proportional to 354,078,015.40, 531,117,023.10 and 172,679,487.40 is: 259,019,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,078,015.40 : 531,117,023.10 = 172,679,487.40 : x
  2. Step 2: Convert to fraction form
    354,078,015.40/531,117,023.10 = 172,679,487.40/x
  3. Step 3: Cross multiply
    354,078,015.40x = 531,117,023.10 × 172,679,487.40
  4. Step 4: Simplify right side
    354,078,015.40x = 91,713,015,298,321,968
  5. Step 5: Solve for x
    x = 91,713,015,298,321,968/354,078,015.40
  6. Step 6: Final answer
    x = 259,019,231.10

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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.