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Finding the Fourth Proportional to 374,762.28, 517,158.90 and 213,669.21

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Solution

The fourth proportional to 374,762.28, 517,158.90 and 213,669.21 is: 294,856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,762.28 : 517,158.90 = 213,669.21 : x
  2. Step 2: Convert to fraction form
    374,762.28/517,158.90 = 213,669.21/x
  3. Step 3: Cross multiply
    374,762.28x = 517,158.90 × 213,669.21
  4. Step 4: Simplify right side
    374,762.28x = 110,500,933,607.47
  5. Step 5: Solve for x
    x = 110,500,933,607.47/374,762.28
  6. Step 6: Final answer
    x = 294,856.07

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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.