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Finding the Fourth Proportional to 504,359.40, 756,487.90 and 171,930.60

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Solution

The fourth proportional to 504,359.40, 756,487.90 and 171,930.60 is: 257,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,359.40 : 756,487.90 = 171,930.60 : x
  2. Step 2: Convert to fraction form
    504,359.40/756,487.90 = 171,930.60/x
  3. Step 3: Cross multiply
    504,359.40x = 756,487.90 × 171,930.60
  4. Step 4: Simplify right side
    504,359.40x = 130,063,418,539.74
  5. Step 5: Solve for x
    x = 130,063,418,539.74/504,359.40
  6. Step 6: Final answer
    x = 257,878.45

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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.