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Finding the Fourth Proportional to 236,712, 355,129.56 and 70,500

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Solution

The fourth proportional to 236,712, 355,129.56 and 70,500 is: 105,768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,712 : 355,129.56 = 70,500 : x
  2. Step 2: Convert to fraction form
    236,712/355,129.56 = 70,500/x
  3. Step 3: Cross multiply
    236,712x = 355,129.56 × 70,500
  4. Step 4: Simplify right side
    236,712x = 25,036,633,980
  5. Step 5: Solve for x
    x = 25,036,633,980/236,712
  6. Step 6: Final answer
    x = 105,768.33

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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.