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Finding the Fourth Proportional to 342,308.32, 472,388.48 and 191,405.36

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Solution

The fourth proportional to 342,308.32, 472,388.48 and 191,405.36 is: 264,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,308.32 : 472,388.48 = 191,405.36 : x
  2. Step 2: Convert to fraction form
    342,308.32/472,388.48 = 191,405.36/x
  3. Step 3: Cross multiply
    342,308.32x = 472,388.48 × 191,405.36
  4. Step 4: Simplify right side
    342,308.32x = 90,417,687,074.25
  5. Step 5: Solve for x
    x = 90,417,687,074.25/342,308.32
  6. Step 6: Final answer
    x = 264,141.07

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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.