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Finding the Fourth Proportional to 543,281.32, 815,088.82 and 259,334.20

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Solution

The fourth proportional to 543,281.32, 815,088.82 and 259,334.20 is: 389,080.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,281.32 : 815,088.82 = 259,334.20 : x
  2. Step 2: Convert to fraction form
    543,281.32/815,088.82 = 259,334.20/x
  3. Step 3: Cross multiply
    543,281.32x = 815,088.82 × 259,334.20
  4. Step 4: Simplify right side
    543,281.32x = 211,380,407,063.64
  5. Step 5: Solve for x
    x = 211,380,407,063.64/543,281.32
  6. Step 6: Final answer
    x = 389,080.94

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1.5x scale

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.