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Finding the Fourth Proportional to 419,979.90, 630,625.95 and 242,832.90

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Solution

The fourth proportional to 419,979.90, 630,625.95 and 242,832.90 is: 364,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,979.90 : 630,625.95 = 242,832.90 : x
  2. Step 2: Convert to fraction form
    419,979.90/630,625.95 = 242,832.90/x
  3. Step 3: Cross multiply
    419,979.90x = 630,625.95 × 242,832.90
  4. Step 4: Simplify right side
    419,979.90x = 153,136,728,253.76
  5. Step 5: Solve for x
    x = 153,136,728,253.76/419,979.90
  6. Step 6: Final answer
    x = 364,628.71

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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.