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Finding the Fourth Proportional to 316,771.25, 437,155.20 and 173,531.25

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Solution

The fourth proportional to 316,771.25, 437,155.20 and 173,531.25 is: 239,479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,771.25 : 437,155.20 = 173,531.25 : x
  2. Step 2: Convert to fraction form
    316,771.25/437,155.20 = 173,531.25/x
  3. Step 3: Cross multiply
    316,771.25x = 437,155.20 × 173,531.25
  4. Step 4: Simplify right side
    316,771.25x = 75,860,088,300
  5. Step 5: Solve for x
    x = 75,860,088,300/316,771.25
  6. Step 6: Final answer
    x = 239,479.09

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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.