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Finding the Fourth Proportional to 485,969.27, 728,870.81 and 130,900.23

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Solution

The fourth proportional to 485,969.27, 728,870.81 and 130,900.23 is: 196,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,969.27 : 728,870.81 = 130,900.23 : x
  2. Step 2: Convert to fraction form
    485,969.27/728,870.81 = 130,900.23/x
  3. Step 3: Cross multiply
    485,969.27x = 728,870.81 × 130,900.23
  4. Step 4: Simplify right side
    485,969.27x = 95,409,356,014.79
  5. Step 5: Solve for x
    x = 95,409,356,014.79/485,969.27
  6. Step 6: Final answer
    x = 196,327.96

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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.