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Finding the Fourth Proportional to 210,634.80, 290,681.60 and 125,800.80

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Solution

The fourth proportional to 210,634.80, 290,681.60 and 125,800.80 is: 173,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,634.80 : 290,681.60 = 125,800.80 : x
  2. Step 2: Convert to fraction form
    210,634.80/290,681.60 = 125,800.80/x
  3. Step 3: Cross multiply
    210,634.80x = 290,681.60 × 125,800.80
  4. Step 4: Simplify right side
    210,634.80x = 36,567,977,825.28
  5. Step 5: Solve for x
    x = 36,567,977,825.28/210,634.80
  6. Step 6: Final answer
    x = 173,608.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.