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Finding the Fourth Proportional to 236,898.50, 355,409.31 and 70,686.50

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Solution

The fourth proportional to 236,898.50, 355,409.31 and 70,686.50 is: 106,048.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,898.50 : 355,409.31 = 70,686.50 : x
  2. Step 2: Convert to fraction form
    236,898.50/355,409.31 = 70,686.50/x
  3. Step 3: Cross multiply
    236,898.50x = 355,409.31 × 70,686.50
  4. Step 4: Simplify right side
    236,898.50x = 25,122,640,191.32
  5. Step 5: Solve for x
    x = 25,122,640,191.32/236,898.50
  6. Step 6: Final answer
    x = 106,048.12

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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.