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Finding the Fourth Proportional to 288,712.14, 398,225.07 and 188,246.22

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Solution

The fourth proportional to 288,712.14, 398,225.07 and 188,246.22 is: 259,650.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,712.14 : 398,225.07 = 188,246.22 : x
  2. Step 2: Convert to fraction form
    288,712.14/398,225.07 = 188,246.22/x
  3. Step 3: Cross multiply
    288,712.14x = 398,225.07 × 188,246.22
  4. Step 4: Simplify right side
    288,712.14x = 74,964,364,136.74
  5. Step 5: Solve for x
    x = 74,964,364,136.74/288,712.14
  6. Step 6: Final answer
    x = 259,650.89

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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.