Home / 430,929.59-646,394.39-135,441.59

Finding the Fourth Proportional to 430,929.59, 646,394.39 and 135,441.59

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Solution

The fourth proportional to 430,929.59, 646,394.39 and 135,441.59 is: 203,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,929.59 : 646,394.39 = 135,441.59 : x
  2. Step 2: Convert to fraction form
    430,929.59/646,394.39 = 135,441.59/x
  3. Step 3: Cross multiply
    430,929.59x = 646,394.39 × 135,441.59
  4. Step 4: Simplify right side
    430,929.59x = 87,548,683,948.68
  5. Step 5: Solve for x
    x = 87,548,683,948.68/430,929.59
  6. Step 6: Final answer
    x = 203,162.39

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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.