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Finding the Fourth Proportional to 252,079.20, 377,762.40 and 139,808.88

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Solution

The fourth proportional to 252,079.20, 377,762.40 and 139,808.88 is: 209,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,079.20 : 377,762.40 = 139,808.88 : x
  2. Step 2: Convert to fraction form
    252,079.20/377,762.40 = 139,808.88/x
  3. Step 3: Cross multiply
    252,079.20x = 377,762.40 × 139,808.88
  4. Step 4: Simplify right side
    252,079.20x = 52,814,538,050.11
  5. Step 5: Solve for x
    x = 52,814,538,050.11/252,079.20
  6. Step 6: Final answer
    x = 209,515.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.