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Finding the Fourth Proportional to 353,161.49, 529,221.15 and 208,918.13

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Solution

The fourth proportional to 353,161.49, 529,221.15 and 208,918.13 is: 313,068.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,161.49 : 529,221.15 = 208,918.13 : x
  2. Step 2: Convert to fraction form
    353,161.49/529,221.15 = 208,918.13/x
  3. Step 3: Cross multiply
    353,161.49x = 529,221.15 × 208,918.13
  4. Step 4: Simplify right side
    353,161.49x = 110,563,890,368.34
  5. Step 5: Solve for x
    x = 110,563,890,368.34/353,161.49
  6. Step 6: Final answer
    x = 313,068.94

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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.