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Finding the Fourth Proportional to 419,936.74, 630,167.55 and 170,618.74

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Solution

The fourth proportional to 419,936.74, 630,167.55 and 170,618.74 is: 256,034.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,936.74 : 630,167.55 = 170,618.74 : x
  2. Step 2: Convert to fraction form
    419,936.74/630,167.55 = 170,618.74/x
  3. Step 3: Cross multiply
    419,936.74x = 630,167.55 × 170,618.74
  4. Step 4: Simplify right side
    419,936.74x = 107,518,393,369.89
  5. Step 5: Solve for x
    x = 107,518,393,369.89/419,936.74
  6. Step 6: Final answer
    x = 256,034.74

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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.