Home / 420,637.26-630,431.01-210,335.34

Finding the Fourth Proportional to 420,637.26, 630,431.01 and 210,335.34

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Solution

The fourth proportional to 420,637.26, 630,431.01 and 210,335.34 is: 315,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,637.26 : 630,431.01 = 210,335.34 : x
  2. Step 2: Convert to fraction form
    420,637.26/630,431.01 = 210,335.34/x
  3. Step 3: Cross multiply
    420,637.26x = 630,431.01 × 210,335.34
  4. Step 4: Simplify right side
    420,637.26x = 132,601,920,834.89
  5. Step 5: Solve for x
    x = 132,601,920,834.89/420,637.26
  6. Step 6: Final answer
    x = 315,240.55

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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.