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Finding the Fourth Proportional to 288,977.85, 398,773.40 and 161,628.84

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Solution

The fourth proportional to 288,977.85, 398,773.40 and 161,628.84 is: 223,038.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,977.85 : 398,773.40 = 161,628.84 : x
  2. Step 2: Convert to fraction form
    288,977.85/398,773.40 = 161,628.84/x
  3. Step 3: Cross multiply
    288,977.85x = 398,773.40 × 161,628.84
  4. Step 4: Simplify right side
    288,977.85x = 64,453,281,256.71
  5. Step 5: Solve for x
    x = 64,453,281,256.71/288,977.85
  6. Step 6: Final answer
    x = 223,038.83

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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.