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Finding the Fourth Proportional to 561,252.52, 774,539.88 and 306,620.16

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Solution

The fourth proportional to 561,252.52, 774,539.88 and 306,620.16 is: 423,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,252.52 : 774,539.88 = 306,620.16 : x
  2. Step 2: Convert to fraction form
    561,252.52/774,539.88 = 306,620.16/x
  3. Step 3: Cross multiply
    561,252.52x = 774,539.88 × 306,620.16
  4. Step 4: Simplify right side
    561,252.52x = 237,489,541,931.98
  5. Step 5: Solve for x
    x = 237,489,541,931.98/561,252.52
  6. Step 6: Final answer
    x = 423,142.05

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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.