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Finding the Fourth Proportional to 308,319.84, 425,549.97 and 187,435.50

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Solution

The fourth proportional to 308,319.84, 425,549.97 and 187,435.50 is: 258,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,319.84 : 425,549.97 = 187,435.50 : x
  2. Step 2: Convert to fraction form
    308,319.84/425,549.97 = 187,435.50/x
  3. Step 3: Cross multiply
    308,319.84x = 425,549.97 × 187,435.50
  4. Step 4: Simplify right side
    308,319.84x = 79,763,171,401.94
  5. Step 5: Solve for x
    x = 79,763,171,401.94/308,319.84
  6. Step 6: Final answer
    x = 258,702.69

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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.