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Finding the Fourth Proportional to 561,348.49, 774,661.20 and 303,225.42

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Solution

The fourth proportional to 561,348.49, 774,661.20 and 303,225.42 is: 418,451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,348.49 : 774,661.20 = 303,225.42 : x
  2. Step 2: Convert to fraction form
    561,348.49/774,661.20 = 303,225.42/x
  3. Step 3: Cross multiply
    561,348.49x = 774,661.20 × 303,225.42
  4. Step 4: Simplify right side
    561,348.49x = 234,896,966,211.58
  5. Step 5: Solve for x
    x = 234,896,966,211.58/561,348.49
  6. Step 6: Final answer
    x = 418,451.23

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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.