Home / 430,936.13-646,404.20-135,448.13

Finding the Fourth Proportional to 430,936.13, 646,404.20 and 135,448.13

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Solution

The fourth proportional to 430,936.13, 646,404.20 and 135,448.13 is: 203,172.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,936.13 : 646,404.20 = 135,448.13 : x
  2. Step 2: Convert to fraction form
    430,936.13/646,404.20 = 135,448.13/x
  3. Step 3: Cross multiply
    430,936.13x = 646,404.20 × 135,448.13
  4. Step 4: Simplify right side
    430,936.13x = 87,554,236,204.88
  5. Step 5: Solve for x
    x = 87,554,236,204.88/430,936.13
  6. Step 6: Final answer
    x = 203,172.19

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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.