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Finding the Fourth Proportional to 476,069.89, 656,988.54 and 261,209.90

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Solution

The fourth proportional to 476,069.89, 656,988.54 and 261,209.90 is: 360,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,069.89 : 656,988.54 = 261,209.90 : x
  2. Step 2: Convert to fraction form
    476,069.89/656,988.54 = 261,209.90/x
  3. Step 3: Cross multiply
    476,069.89x = 656,988.54 × 261,209.90
  4. Step 4: Simplify right side
    476,069.89x = 171,611,911,487.57
  5. Step 5: Solve for x
    x = 171,611,911,487.57/476,069.89
  6. Step 6: Final answer
    x = 360,476.30

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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.