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Finding the Fourth Proportional to 374,886.72, 517,924.80 and 314,350.56

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Solution

The fourth proportional to 374,886.72, 517,924.80 and 314,350.56 is: 434,291.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,886.72 : 517,924.80 = 314,350.56 : x
  2. Step 2: Convert to fraction form
    374,886.72/517,924.80 = 314,350.56/x
  3. Step 3: Cross multiply
    374,886.72x = 517,924.80 × 314,350.56
  4. Step 4: Simplify right side
    374,886.72x = 162,809,950,917.89
  5. Step 5: Solve for x
    x = 162,809,950,917.89/374,886.72
  6. Step 6: Final answer
    x = 434,291.06

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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.