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Finding the Fourth Proportional to 297,921.60, 446,590.80 and 266,428.80

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Solution

The fourth proportional to 297,921.60, 446,590.80 and 266,428.80 is: 399,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,921.60 : 446,590.80 = 266,428.80 : x
  2. Step 2: Convert to fraction form
    297,921.60/446,590.80 = 266,428.80/x
  3. Step 3: Cross multiply
    297,921.60x = 446,590.80 × 266,428.80
  4. Step 4: Simplify right side
    297,921.60x = 118,984,650,935.04
  5. Step 5: Solve for x
    x = 118,984,650,935.04/297,921.60
  6. Step 6: Final answer
    x = 399,382.42

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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.