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Finding the Fourth Proportional to 210,999.58, 317,980.46 and 189,960.64

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Solution

The fourth proportional to 210,999.58, 317,980.46 and 189,960.64 is: 286,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,999.58 : 317,980.46 = 189,960.64 : x
  2. Step 2: Convert to fraction form
    210,999.58/317,980.46 = 189,960.64/x
  3. Step 3: Cross multiply
    210,999.58x = 317,980.46 × 189,960.64
  4. Step 4: Simplify right side
    210,999.58x = 60,403,771,214.19
  5. Step 5: Solve for x
    x = 60,403,771,214.19/210,999.58
  6. Step 6: Final answer
    x = 286,274.37

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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.