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Finding the Fourth Proportional to 442,305.89, 610,378.93 and 251,319.28

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Solution

The fourth proportional to 442,305.89, 610,378.93 and 251,319.28 is: 346,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,305.89 : 610,378.93 = 251,319.28 : x
  2. Step 2: Convert to fraction form
    442,305.89/610,378.93 = 251,319.28/x
  3. Step 3: Cross multiply
    442,305.89x = 610,378.93 × 251,319.28
  4. Step 4: Simplify right side
    442,305.89x = 153,399,993,214.77
  5. Step 5: Solve for x
    x = 153,399,993,214.77/442,305.89
  6. Step 6: Final answer
    x = 346,818.79

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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.