Home / 430,930.59-646,395.89-135,442.59

Finding the Fourth Proportional to 430,930.59, 646,395.89 and 135,442.59

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Solution

The fourth proportional to 430,930.59, 646,395.89 and 135,442.59 is: 203,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,930.59 : 646,395.89 = 135,442.59 : x
  2. Step 2: Convert to fraction form
    430,930.59/646,395.89 = 135,442.59/x
  3. Step 3: Cross multiply
    430,930.59x = 646,395.89 × 135,442.59
  4. Step 4: Simplify right side
    430,930.59x = 87,549,533,506.96
  5. Step 5: Solve for x
    x = 87,549,533,506.96/430,930.59
  6. Step 6: Final answer
    x = 203,163.89

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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.