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Finding the Fourth Proportional to 550,149.19, 759,242.40 and 308,447.42

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Solution

The fourth proportional to 550,149.19, 759,242.40 and 308,447.42 is: 425,677.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,149.19 : 759,242.40 = 308,447.42 : x
  2. Step 2: Convert to fraction form
    550,149.19/759,242.40 = 308,447.42/x
  3. Step 3: Cross multiply
    550,149.19x = 759,242.40 × 308,447.42
  4. Step 4: Simplify right side
    550,149.19x = 234,186,354,481.72
  5. Step 5: Solve for x
    x = 234,186,354,481.72/550,149.19
  6. Step 6: Final answer
    x = 425,677.91

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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.