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Finding the Fourth Proportional to 442,888.50, 611,218.98 and 251,963.40

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Solution

The fourth proportional to 442,888.50, 611,218.98 and 251,963.40 is: 347,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,888.50 : 611,218.98 = 251,963.40 : x
  2. Step 2: Convert to fraction form
    442,888.50/611,218.98 = 251,963.40/x
  3. Step 3: Cross multiply
    442,888.50x = 611,218.98 × 251,963.40
  4. Step 4: Simplify right side
    442,888.50x = 154,004,812,345.33
  5. Step 5: Solve for x
    x = 154,004,812,345.33/442,888.50
  6. Step 6: Final answer
    x = 347,728.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.