Home / 280,587,278.21-387,194,825.03-155,132,221.14

Finding the Fourth Proportional to 280,587,278.21, 387,194,825.03 and 155,132,221.14

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Solution

The fourth proportional to 280,587,278.21, 387,194,825.03 and 155,132,221.14 is: 214,073,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,587,278.21 : 387,194,825.03 = 155,132,221.14 : x
  2. Step 2: Convert to fraction form
    280,587,278.21/387,194,825.03 = 155,132,221.14/x
  3. Step 3: Cross multiply
    280,587,278.21x = 387,194,825.03 × 155,132,221.14
  4. Step 4: Simplify right side
    280,587,278.21x = 60,066,393,220,041,896
  5. Step 5: Solve for x
    x = 60,066,393,220,041,896/280,587,278.21
  6. Step 6: Final answer
    x = 214,073,829.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.