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Finding the Fourth Proportional to 236,404.80, 354,655.80 and 78,746.40

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Solution

The fourth proportional to 236,404.80, 354,655.80 and 78,746.40 is: 118,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,404.80 : 354,655.80 = 78,746.40 : x
  2. Step 2: Convert to fraction form
    236,404.80/354,655.80 = 78,746.40/x
  3. Step 3: Cross multiply
    236,404.80x = 354,655.80 × 78,746.40
  4. Step 4: Simplify right side
    236,404.80x = 27,927,867,489.12
  5. Step 5: Solve for x
    x = 27,927,867,489.12/236,404.80
  6. Step 6: Final answer
    x = 118,135.79

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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.