Home / 279,776.94-385,631.01-197,999.70

Finding the Fourth Proportional to 279,776.94, 385,631.01 and 197,999.70

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Solution

The fourth proportional to 279,776.94, 385,631.01 and 197,999.70 is: 272,913.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,776.94 : 385,631.01 = 197,999.70 : x
  2. Step 2: Convert to fraction form
    279,776.94/385,631.01 = 197,999.70/x
  3. Step 3: Cross multiply
    279,776.94x = 385,631.01 × 197,999.70
  4. Step 4: Simplify right side
    279,776.94x = 76,354,824,290.70
  5. Step 5: Solve for x
    x = 76,354,824,290.70/279,776.94
  6. Step 6: Final answer
    x = 272,913.22

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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.