Home / 280,669,568.40-420,972,189.12-73,427,978.25

Finding the Fourth Proportional to 280,669,568.40, 420,972,189.12 and 73,427,978.25

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Solution

The fourth proportional to 280,669,568.40, 420,972,189.12 and 73,427,978.25 is: 110,133,552.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,669,568.40 : 420,972,189.12 = 73,427,978.25 : x
  2. Step 2: Convert to fraction form
    280,669,568.40/420,972,189.12 = 73,427,978.25/x
  3. Step 3: Cross multiply
    280,669,568.40x = 420,972,189.12 × 73,427,978.25
  4. Step 4: Simplify right side
    280,669,568.40x = 30,911,136,746,558,248
  5. Step 5: Solve for x
    x = 30,911,136,746,558,248/280,669,568.40
  6. Step 6: Final answer
    x = 110,133,552.86

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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.