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Finding the Fourth Proportional to 504,519.20, 756,490.80 and 188,986.40

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Solution

The fourth proportional to 504,519.20, 756,490.80 and 188,986.40 is: 283,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,519.20 : 756,490.80 = 188,986.40 : x
  2. Step 2: Convert to fraction form
    504,519.20/756,490.80 = 188,986.40/x
  3. Step 3: Cross multiply
    504,519.20x = 756,490.80 × 188,986.40
  4. Step 4: Simplify right side
    504,519.20x = 142,966,472,925.12
  5. Step 5: Solve for x
    x = 142,966,472,925.12/504,519.20
  6. Step 6: Final answer
    x = 283,371.72

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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.