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Finding the Fourth Proportional to 374,877.56, 517,318.18 and 213,784.47

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Solution

The fourth proportional to 374,877.56, 517,318.18 and 213,784.47 is: 295,015.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,877.56 : 517,318.18 = 213,784.47 : x
  2. Step 2: Convert to fraction form
    374,877.56/517,318.18 = 213,784.47/x
  3. Step 3: Cross multiply
    374,877.56x = 517,318.18 × 213,784.47
  4. Step 4: Simplify right side
    374,877.56x = 110,594,592,398.20
  5. Step 5: Solve for x
    x = 110,594,592,398.20/374,877.56
  6. Step 6: Final answer
    x = 295,015.24

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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.