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Finding the Fourth Proportional to 210,999.33, 317,980.08 and 189,960.39

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Solution

The fourth proportional to 210,999.33, 317,980.08 and 189,960.39 is: 286,273.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,999.33 : 317,980.08 = 189,960.39 : x
  2. Step 2: Convert to fraction form
    210,999.33/317,980.08 = 189,960.39/x
  3. Step 3: Cross multiply
    210,999.33x = 317,980.08 × 189,960.39
  4. Step 4: Simplify right side
    210,999.33x = 60,403,620,009.03
  5. Step 5: Solve for x
    x = 60,403,620,009.03/210,999.33
  6. Step 6: Final answer
    x = 286,273.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.