Home / 430,983.36-646,475.40-135,495.36

Finding the Fourth Proportional to 430,983.36, 646,475.40 and 135,495.36

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Solution

The fourth proportional to 430,983.36, 646,475.40 and 135,495.36 is: 203,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,983.36 : 646,475.40 = 135,495.36 : x
  2. Step 2: Convert to fraction form
    430,983.36/646,475.40 = 135,495.36/x
  3. Step 3: Cross multiply
    430,983.36x = 646,475.40 × 135,495.36
  4. Step 4: Simplify right side
    430,983.36x = 87,594,417,054.14
  5. Step 5: Solve for x
    x = 87,594,417,054.14/430,983.36
  6. Step 6: Final answer
    x = 203,243.15

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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.