Home / 430,502.25-645,846.81-130,975.05

Finding the Fourth Proportional to 430,502.25, 645,846.81 and 130,975.05

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Solution

The fourth proportional to 430,502.25, 645,846.81 and 130,975.05 is: 196,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,502.25 : 645,846.81 = 130,975.05 : x
  2. Step 2: Convert to fraction form
    430,502.25/645,846.81 = 130,975.05/x
  3. Step 3: Cross multiply
    430,502.25x = 645,846.81 × 130,975.05
  4. Step 4: Simplify right side
    430,502.25x = 84,589,820,162.86
  5. Step 5: Solve for x
    x = 84,589,820,162.86/430,502.25
  6. Step 6: Final answer
    x = 196,491.00

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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.