Home / 420,680.39-630,918.52-140,161.19

Finding the Fourth Proportional to 420,680.39, 630,918.52 and 140,161.19

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Solution

The fourth proportional to 420,680.39, 630,918.52 and 140,161.19 is: 210,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,680.39 : 630,918.52 = 140,161.19 : x
  2. Step 2: Convert to fraction form
    420,680.39/630,918.52 = 140,161.19/x
  3. Step 3: Cross multiply
    420,680.39x = 630,918.52 × 140,161.19
  4. Step 4: Simplify right side
    420,680.39x = 88,430,287,051.24
  5. Step 5: Solve for x
    x = 88,430,287,051.24/420,680.39
  6. Step 6: Final answer
    x = 210,207.77

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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.