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Finding the Fourth Proportional to 236,394.40, 354,008.40 and 157,079.20

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Solution

The fourth proportional to 236,394.40, 354,008.40 and 157,079.20 is: 235,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,394.40 : 354,008.40 = 157,079.20 : x
  2. Step 2: Convert to fraction form
    236,394.40/354,008.40 = 157,079.20/x
  3. Step 3: Cross multiply
    236,394.40x = 354,008.40 × 157,079.20
  4. Step 4: Simplify right side
    236,394.40x = 55,607,356,265.28
  5. Step 5: Solve for x
    x = 55,607,356,265.28/236,394.40
  6. Step 6: Final answer
    x = 235,231.28

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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.