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Finding the Fourth Proportional to 486,522.90, 729,784.35 and 171,011.70

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Solution

The fourth proportional to 486,522.90, 729,784.35 and 171,011.70 is: 256,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,522.90 : 729,784.35 = 171,011.70 : x
  2. Step 2: Convert to fraction form
    486,522.90/729,784.35 = 171,011.70/x
  3. Step 3: Cross multiply
    486,522.90x = 729,784.35 × 171,011.70
  4. Step 4: Simplify right side
    486,522.90x = 124,801,662,326.90
  5. Step 5: Solve for x
    x = 124,801,662,326.90/486,522.90
  6. Step 6: Final answer
    x = 256,517.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.