Home / 257,791,998.80-386,687,998.20-143,130,213.20

Finding the Fourth Proportional to 257,791,998.80, 386,687,998.20 and 143,130,213.20

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Solution

The fourth proportional to 257,791,998.80, 386,687,998.20 and 143,130,213.20 is: 214,695,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,791,998.80 : 386,687,998.20 = 143,130,213.20 : x
  2. Step 2: Convert to fraction form
    257,791,998.80/386,687,998.20 = 143,130,213.20/x
  3. Step 3: Cross multiply
    257,791,998.80x = 386,687,998.20 × 143,130,213.20
  4. Step 4: Simplify right side
    257,791,998.80x = 55,346,735,624,247,208
  5. Step 5: Solve for x
    x = 55,346,735,624,247,208/257,791,998.80
  6. Step 6: Final answer
    x = 214,695,319.80

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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.