Home / 211,725.18-317,346.18-85,284.45

Finding the Fourth Proportional to 211,725.18, 317,346.18 and 85,284.45

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Solution

The fourth proportional to 211,725.18, 317,346.18 and 85,284.45 is: 127,829.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,725.18 : 317,346.18 = 85,284.45 : x
  2. Step 2: Convert to fraction form
    211,725.18/317,346.18 = 85,284.45/x
  3. Step 3: Cross multiply
    211,725.18x = 317,346.18 × 85,284.45
  4. Step 4: Simplify right side
    211,725.18x = 27,064,694,420.90
  5. Step 5: Solve for x
    x = 27,064,694,420.90/211,725.18
  6. Step 6: Final answer
    x = 127,829.36

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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.