Home / 212,638.88-317,292.40-190,298.72

Finding the Fourth Proportional to 212,638.88, 317,292.40 and 190,298.72

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Solution

The fourth proportional to 212,638.88, 317,292.40 and 190,298.72 is: 283,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,638.88 : 317,292.40 = 190,298.72 : x
  2. Step 2: Convert to fraction form
    212,638.88/317,292.40 = 190,298.72/x
  3. Step 3: Cross multiply
    212,638.88x = 317,292.40 × 190,298.72
  4. Step 4: Simplify right side
    212,638.88x = 60,380,337,585.73
  5. Step 5: Solve for x
    x = 60,380,337,585.73/212,638.88
  6. Step 6: Final answer
    x = 283,957.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.