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Finding the Fourth Proportional to 354,241.69, 529,104.88 and 320,455.73

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Solution

The fourth proportional to 354,241.69, 529,104.88 and 320,455.73 is: 478,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,241.69 : 529,104.88 = 320,455.73 : x
  2. Step 2: Convert to fraction form
    354,241.69/529,104.88 = 320,455.73/x
  3. Step 3: Cross multiply
    354,241.69x = 529,104.88 × 320,455.73
  4. Step 4: Simplify right side
    354,241.69x = 169,554,690,566.96
  5. Step 5: Solve for x
    x = 169,554,690,566.96/354,241.69
  6. Step 6: Final answer
    x = 478,641.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.