Home / 420,493.74-630,747.09-140,011.26

Finding the Fourth Proportional to 420,493.74, 630,747.09 and 140,011.26

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Solution

The fourth proportional to 420,493.74, 630,747.09 and 140,011.26 is: 210,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,493.74 : 630,747.09 = 140,011.26 : x
  2. Step 2: Convert to fraction form
    420,493.74/630,747.09 = 140,011.26/x
  3. Step 3: Cross multiply
    420,493.74x = 630,747.09 × 140,011.26
  4. Step 4: Simplify right side
    420,493.74x = 88,311,694,812.23
  5. Step 5: Solve for x
    x = 88,311,694,812.23/420,493.74
  6. Step 6: Final answer
    x = 210,019.05

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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.