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Finding the Fourth Proportional to 563,144.97, 777,133.87 and 305,015.50

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Solution

The fourth proportional to 563,144.97, 777,133.87 and 305,015.50 is: 420,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,144.97 : 777,133.87 = 305,015.50 : x
  2. Step 2: Convert to fraction form
    563,144.97/777,133.87 = 305,015.50/x
  3. Step 3: Cross multiply
    563,144.97x = 777,133.87 × 305,015.50
  4. Step 4: Simplify right side
    563,144.97x = 237,037,872,039.32
  5. Step 5: Solve for x
    x = 237,037,872,039.32/563,144.97
  6. Step 6: Final answer
    x = 420,918.03

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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.