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Finding the Fourth Proportional to 236,530.40, 354,212.40 and 157,215.20

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Solution

The fourth proportional to 236,530.40, 354,212.40 and 157,215.20 is: 235,435.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,530.40 : 354,212.40 = 157,215.20 : x
  2. Step 2: Convert to fraction form
    236,530.40/354,212.40 = 157,215.20/x
  3. Step 3: Cross multiply
    236,530.40x = 354,212.40 × 157,215.20
  4. Step 4: Simplify right side
    236,530.40x = 55,687,573,308.48
  5. Step 5: Solve for x
    x = 55,687,573,308.48/236,530.40
  6. Step 6: Final answer
    x = 235,435.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.