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Finding the Fourth Proportional to 274,785.66, 412,237.80 and 85,242.33

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Solution

The fourth proportional to 274,785.66, 412,237.80 and 85,242.33 is: 127,881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,785.66 : 412,237.80 = 85,242.33 : x
  2. Step 2: Convert to fraction form
    274,785.66/412,237.80 = 85,242.33/x
  3. Step 3: Cross multiply
    274,785.66x = 412,237.80 × 85,242.33
  4. Step 4: Simplify right side
    274,785.66x = 35,140,110,586.07
  5. Step 5: Solve for x
    x = 35,140,110,586.07/274,785.66
  6. Step 6: Final answer
    x = 127,881.89

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1.5x scale

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.