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Finding the Fourth Proportional to 236,807.60, 355,195.20 and 76,881.20

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Solution

The fourth proportional to 236,807.60, 355,195.20 and 76,881.20 is: 115,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,807.60 : 355,195.20 = 76,881.20 : x
  2. Step 2: Convert to fraction form
    236,807.60/355,195.20 = 76,881.20/x
  3. Step 3: Cross multiply
    236,807.60x = 355,195.20 × 76,881.20
  4. Step 4: Simplify right side
    236,807.60x = 27,307,833,210.24
  5. Step 5: Solve for x
    x = 27,307,833,210.24/236,807.60
  6. Step 6: Final answer
    x = 115,316.54

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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.