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Finding the Fourth Proportional to 561,295.90, 774,588.17 and 303,172.59

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Solution

The fourth proportional to 561,295.90, 774,588.17 and 303,172.59 is: 418,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,295.90 : 774,588.17 = 303,172.59 : x
  2. Step 2: Convert to fraction form
    561,295.90/774,588.17 = 303,172.59/x
  3. Step 3: Cross multiply
    561,295.90x = 774,588.17 × 303,172.59
  4. Step 4: Simplify right side
    561,295.90x = 234,833,900,924.33
  5. Step 5: Solve for x
    x = 234,833,900,924.33/561,295.90
  6. Step 6: Final answer
    x = 418,378.08

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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.