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Finding the Fourth Proportional to 210,272.80, 315,409.20 and 168,800.80

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Solution

The fourth proportional to 210,272.80, 315,409.20 and 168,800.80 is: 253,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,272.80 : 315,409.20 = 168,800.80 : x
  2. Step 2: Convert to fraction form
    210,272.80/315,409.20 = 168,800.80/x
  3. Step 3: Cross multiply
    210,272.80x = 315,409.20 × 168,800.80
  4. Step 4: Simplify right side
    210,272.80x = 53,241,325,287.36
  5. Step 5: Solve for x
    x = 53,241,325,287.36/210,272.80
  6. Step 6: Final answer
    x = 253,201.20

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1.5x scale

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.