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Finding the Fourth Proportional to 511,809.36, 706,272.26 and 279,222.45

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Solution

The fourth proportional to 511,809.36, 706,272.26 and 279,222.45 is: 385,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,809.36 : 706,272.26 = 279,222.45 : x
  2. Step 2: Convert to fraction form
    511,809.36/706,272.26 = 279,222.45/x
  3. Step 3: Cross multiply
    511,809.36x = 706,272.26 × 279,222.45
  4. Step 4: Simplify right side
    511,809.36x = 197,207,068,155.72
  5. Step 5: Solve for x
    x = 197,207,068,155.72/511,809.36
  6. Step 6: Final answer
    x = 385,313.53

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1.5x scale

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.