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Finding the Fourth Proportional to 420,202.62, 630,049.32 and 167,521.50

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Solution

The fourth proportional to 420,202.62, 630,049.32 and 167,521.50 is: 251,180.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,202.62 : 630,049.32 = 167,521.50 : x
  2. Step 2: Convert to fraction form
    420,202.62/630,049.32 = 167,521.50/x
  3. Step 3: Cross multiply
    420,202.62x = 630,049.32 × 167,521.50
  4. Step 4: Simplify right side
    420,202.62x = 105,546,807,160.38
  5. Step 5: Solve for x
    x = 105,546,807,160.38/420,202.62
  6. Step 6: Final answer
    x = 251,180.75

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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.