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Finding the Fourth Proportional to 317,308.64, 437,853.48 and 189,980.96

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Solution

The fourth proportional to 317,308.64, 437,853.48 and 189,980.96 is: 262,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,308.64 : 437,853.48 = 189,980.96 : x
  2. Step 2: Convert to fraction form
    317,308.64/437,853.48 = 189,980.96/x
  3. Step 3: Cross multiply
    317,308.64x = 437,853.48 × 189,980.96
  4. Step 4: Simplify right side
    317,308.64x = 83,183,824,469.74
  5. Step 5: Solve for x
    x = 83,183,824,469.74/317,308.64
  6. Step 6: Final answer
    x = 262,154.30

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1.5x scale

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.