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Finding the Fourth Proportional to 255,613.10, 383,419.65 and 161,134.70

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Solution

The fourth proportional to 255,613.10, 383,419.65 and 161,134.70 is: 241,702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,613.10 : 383,419.65 = 161,134.70 : x
  2. Step 2: Convert to fraction form
    255,613.10/383,419.65 = 161,134.70/x
  3. Step 3: Cross multiply
    255,613.10x = 383,419.65 × 161,134.70
  4. Step 4: Simplify right side
    255,613.10x = 61,782,210,276.86
  5. Step 5: Solve for x
    x = 61,782,210,276.86/255,613.10
  6. Step 6: Final answer
    x = 241,702.05

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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.