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Finding the Fourth Proportional to 508,149.12, 701,258.13 and 278,715.81

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Solution

The fourth proportional to 508,149.12, 701,258.13 and 278,715.81 is: 384,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,149.12 : 701,258.13 = 278,715.81 : x
  2. Step 2: Convert to fraction form
    508,149.12/701,258.13 = 278,715.81/x
  3. Step 3: Cross multiply
    508,149.12x = 701,258.13 × 278,715.81
  4. Step 4: Simplify right side
    508,149.12x = 195,451,727,722.04
  5. Step 5: Solve for x
    x = 195,451,727,722.04/508,149.12
  6. Step 6: Final answer
    x = 384,634.59

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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.