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Finding the Fourth Proportional to 288,502.62, 398,188.62 and 190,213.28

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Solution

The fourth proportional to 288,502.62, 398,188.62 and 190,213.28 is: 262,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,502.62 : 398,188.62 = 190,213.28 : x
  2. Step 2: Convert to fraction form
    288,502.62/398,188.62 = 190,213.28/x
  3. Step 3: Cross multiply
    288,502.62x = 398,188.62 × 190,213.28
  4. Step 4: Simplify right side
    288,502.62x = 75,740,761,477.93
  5. Step 5: Solve for x
    x = 75,740,761,477.93/288,502.62
  6. Step 6: Final answer
    x = 262,530.58

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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.