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Finding the Fourth Proportional to 442,842, 611,118.72 and 251,855.16

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Solution

The fourth proportional to 442,842, 611,118.72 and 251,855.16 is: 347,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,842 : 611,118.72 = 251,855.16 : x
  2. Step 2: Convert to fraction form
    442,842/611,118.72 = 251,855.16/x
  3. Step 3: Cross multiply
    442,842x = 611,118.72 × 251,855.16
  4. Step 4: Simplify right side
    442,842x = 153,913,403,004.60
  5. Step 5: Solve for x
    x = 153,913,403,004.60/442,842
  6. Step 6: Final answer
    x = 347,558.28

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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.