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Finding the Fourth Proportional to 236,442.40, 354,080.40 and 157,127.20

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Solution

The fourth proportional to 236,442.40, 354,080.40 and 157,127.20 is: 235,303.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,442.40 : 354,080.40 = 157,127.20 : x
  2. Step 2: Convert to fraction form
    236,442.40/354,080.40 = 157,127.20/x
  3. Step 3: Cross multiply
    236,442.40x = 354,080.40 × 157,127.20
  4. Step 4: Simplify right side
    236,442.40x = 55,635,661,826.88
  5. Step 5: Solve for x
    x = 55,635,661,826.88/236,442.40
  6. Step 6: Final answer
    x = 235,303.24

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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.