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Finding the Fourth Proportional to 236,488.64, 354,800.64 and 78,820.16

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Solution

The fourth proportional to 236,488.64, 354,800.64 and 78,820.16 is: 118,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,488.64 : 354,800.64 = 78,820.16 : x
  2. Step 2: Convert to fraction form
    236,488.64/354,800.64 = 78,820.16/x
  3. Step 3: Cross multiply
    236,488.64x = 354,800.64 × 78,820.16
  4. Step 4: Simplify right side
    236,488.64x = 27,965,443,212.90
  5. Step 5: Solve for x
    x = 27,965,443,212.90/236,488.64
  6. Step 6: Final answer
    x = 118,252.80

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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.