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Finding the Fourth Proportional to 281,765.21, 388,875.86 and 174,369.83

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Solution

The fourth proportional to 281,765.21, 388,875.86 and 174,369.83 is: 240,655.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,765.21 : 388,875.86 = 174,369.83 : x
  2. Step 2: Convert to fraction form
    281,765.21/388,875.86 = 174,369.83/x
  3. Step 3: Cross multiply
    281,765.21x = 388,875.86 × 174,369.83
  4. Step 4: Simplify right side
    281,765.21x = 67,808,214,783.08
  5. Step 5: Solve for x
    x = 67,808,214,783.08/281,765.21
  6. Step 6: Final answer
    x = 240,655.03

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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.