Home / 279,817,854.75-419,164,670.88-139,335,081.12

Finding the Fourth Proportional to 279,817,854.75, 419,164,670.88 and 139,335,081.12

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Solution

The fourth proportional to 279,817,854.75, 419,164,670.88 and 139,335,081.12 is: 208,722,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,817,854.75 : 419,164,670.88 = 139,335,081.12 : x
  2. Step 2: Convert to fraction form
    279,817,854.75/419,164,670.88 = 139,335,081.12/x
  3. Step 3: Cross multiply
    279,817,854.75x = 419,164,670.88 × 139,335,081.12
  4. Step 4: Simplify right side
    279,817,854.75x = 58,404,343,419,702,904
  5. Step 5: Solve for x
    x = 58,404,343,419,702,904/279,817,854.75
  6. Step 6: Final answer
    x = 208,722,718.83

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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.