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Finding the Fourth Proportional to 316,715.15, 437,066.25 and 171,520.48

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Solution

The fourth proportional to 316,715.15, 437,066.25 and 171,520.48 is: 236,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,715.15 : 437,066.25 = 171,520.48 : x
  2. Step 2: Convert to fraction form
    316,715.15/437,066.25 = 171,520.48/x
  3. Step 3: Cross multiply
    316,715.15x = 437,066.25 × 171,520.48
  4. Step 4: Simplify right side
    316,715.15x = 74,965,813,859.73
  5. Step 5: Solve for x
    x = 74,965,813,859.73/316,715.15
  6. Step 6: Final answer
    x = 236,697.91

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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.