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Finding the Fourth Proportional to 307,087.36, 423,781.44 and 178,050.88

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Solution

The fourth proportional to 307,087.36, 423,781.44 and 178,050.88 is: 245,710.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,087.36 : 423,781.44 = 178,050.88 : x
  2. Step 2: Convert to fraction form
    307,087.36/423,781.44 = 178,050.88/x
  3. Step 3: Cross multiply
    307,087.36x = 423,781.44 × 178,050.88
  4. Step 4: Simplify right side
    307,087.36x = 75,454,658,319.67
  5. Step 5: Solve for x
    x = 75,454,658,319.67/307,087.36
  6. Step 6: Final answer
    x = 245,710.73

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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.