Home / 280,546,979.85-387,166,788.78-156,787,653.33

Finding the Fourth Proportional to 280,546,979.85, 387,166,788.78 and 156,787,653.33

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Solution

The fourth proportional to 280,546,979.85, 387,166,788.78 and 156,787,653.33 is: 216,373,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,546,979.85 : 387,166,788.78 = 156,787,653.33 : x
  2. Step 2: Convert to fraction form
    280,546,979.85/387,166,788.78 = 156,787,653.33/x
  3. Step 3: Cross multiply
    280,546,979.85x = 387,166,788.78 × 156,787,653.33
  4. Step 4: Simplify right side
    280,546,979.85x = 60,702,972,260,127,976
  5. Step 5: Solve for x
    x = 60,702,972,260,127,976/280,546,979.85
  6. Step 6: Final answer
    x = 216,373,643.70

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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.