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Finding the Fourth Proportional to 550,302.89, 759,456.95 and 305,367.77

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Solution

The fourth proportional to 550,302.89, 759,456.95 and 305,367.77 is: 421,429.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,302.89 : 759,456.95 = 305,367.77 : x
  2. Step 2: Convert to fraction form
    550,302.89/759,456.95 = 305,367.77/x
  3. Step 3: Cross multiply
    550,302.89x = 759,456.95 × 305,367.77
  4. Step 4: Simplify right side
    550,302.89x = 231,913,673,705.66
  5. Step 5: Solve for x
    x = 231,913,673,705.66/550,302.89
  6. Step 6: Final answer
    x = 421,429.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.