Home / 280,501,515.60-387,084,659.40-156,743,209.68

Finding the Fourth Proportional to 280,501,515.60, 387,084,659.40 and 156,743,209.68

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Solution

The fourth proportional to 280,501,515.60, 387,084,659.40 and 156,743,209.68 is: 216,301,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,501,515.60 : 387,084,659.40 = 156,743,209.68 : x
  2. Step 2: Convert to fraction form
    280,501,515.60/387,084,659.40 = 156,743,209.68/x
  3. Step 3: Cross multiply
    280,501,515.60x = 387,084,659.40 × 156,743,209.68
  4. Step 4: Simplify right side
    280,501,515.60x = 60,672,891,932,245,584
  5. Step 5: Solve for x
    x = 60,672,891,932,245,584/280,501,515.60
  6. Step 6: Final answer
    x = 216,301,476.31

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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.