Home / 280,851,650.17-421,317,774.37-86,780,011.21

Finding the Fourth Proportional to 280,851,650.17, 421,317,774.37 and 86,780,011.21

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Solution

The fourth proportional to 280,851,650.17, 421,317,774.37 and 86,780,011.21 is: 130,182,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,851,650.17 : 421,317,774.37 = 86,780,011.21 : x
  2. Step 2: Convert to fraction form
    280,851,650.17/421,317,774.37 = 86,780,011.21/x
  3. Step 3: Cross multiply
    280,851,650.17x = 421,317,774.37 × 86,780,011.21
  4. Step 4: Simplify right side
    280,851,650.17x = 36,561,961,180,694,264
  5. Step 5: Solve for x
    x = 36,561,961,180,694,264/280,851,650.17
  6. Step 6: Final answer
    x = 130,182,468.78

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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.