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Finding the Fourth Proportional to 252,655.56, 348,663.96 and 139,477.50

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Solution

The fourth proportional to 252,655.56, 348,663.96 and 139,477.50 is: 192,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,655.56 : 348,663.96 = 139,477.50 : x
  2. Step 2: Convert to fraction form
    252,655.56/348,663.96 = 139,477.50/x
  3. Step 3: Cross multiply
    252,655.56x = 348,663.96 × 139,477.50
  4. Step 4: Simplify right side
    252,655.56x = 48,630,777,480.90
  5. Step 5: Solve for x
    x = 48,630,777,480.90/252,655.56
  6. Step 6: Final answer
    x = 192,478.56

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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.