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Finding the Fourth Proportional to 259,722.40, 389,502.60 and 101,999.20

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Solution

The fourth proportional to 259,722.40, 389,502.60 and 101,999.20 is: 152,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,722.40 : 389,502.60 = 101,999.20 : x
  2. Step 2: Convert to fraction form
    259,722.40/389,502.60 = 101,999.20/x
  3. Step 3: Cross multiply
    259,722.40x = 389,502.60 × 101,999.20
  4. Step 4: Simplify right side
    259,722.40x = 39,728,953,597.92
  5. Step 5: Solve for x
    x = 39,728,953,597.92/259,722.40
  6. Step 6: Final answer
    x = 152,966.99

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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.