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Finding the Fourth Proportional to 420,368.75, 630,535.47 and 195,651.89

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Solution

The fourth proportional to 420,368.75, 630,535.47 and 195,651.89 is: 293,469.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,368.75 : 630,535.47 = 195,651.89 : x
  2. Step 2: Convert to fraction form
    420,368.75/630,535.47 = 195,651.89/x
  3. Step 3: Cross multiply
    420,368.75x = 630,535.47 × 195,651.89
  4. Step 4: Simplify right side
    420,368.75x = 123,365,453,264.86
  5. Step 5: Solve for x
    x = 123,365,453,264.86/420,368.75
  6. Step 6: Final answer
    x = 293,469.61

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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.