Home / 280,420,124.80-386,980,973.00-153,263,371.62

Finding the Fourth Proportional to 280,420,124.80, 386,980,973.00 and 153,263,371.62

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Solution

The fourth proportional to 280,420,124.80, 386,980,973.00 and 153,263,371.62 is: 211,504,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,420,124.80 : 386,980,973.00 = 153,263,371.62 : x
  2. Step 2: Convert to fraction form
    280,420,124.80/386,980,973.00 = 153,263,371.62/x
  3. Step 3: Cross multiply
    280,420,124.80x = 386,980,973.00 × 153,263,371.62
  4. Step 4: Simplify right side
    280,420,124.80x = 59,310,008,673,195,408
  5. Step 5: Solve for x
    x = 59,310,008,673,195,408/280,420,124.80
  6. Step 6: Final answer
    x = 211,504,109.11

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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.