Home / 420,479.22-630,801.92-154,242.05

Finding the Fourth Proportional to 420,479.22, 630,801.92 and 154,242.05

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Solution

The fourth proportional to 420,479.22, 630,801.92 and 154,242.05 is: 231,393.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,479.22 : 630,801.92 = 154,242.05 : x
  2. Step 2: Convert to fraction form
    420,479.22/630,801.92 = 154,242.05/x
  3. Step 3: Cross multiply
    420,479.22x = 630,801.92 × 154,242.05
  4. Step 4: Simplify right side
    420,479.22x = 97,296,177,359.52
  5. Step 5: Solve for x
    x = 97,296,177,359.52/420,479.22
  6. Step 6: Final answer
    x = 231,393.55

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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.