Home / 212,721.80-319,082.70-162,955.40

Finding the Fourth Proportional to 212,721.80, 319,082.70 and 162,955.40

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Solution

The fourth proportional to 212,721.80, 319,082.70 and 162,955.40 is: 244,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,721.80 : 319,082.70 = 162,955.40 : x
  2. Step 2: Convert to fraction form
    212,721.80/319,082.70 = 162,955.40/x
  3. Step 3: Cross multiply
    212,721.80x = 319,082.70 × 162,955.40
  4. Step 4: Simplify right side
    212,721.80x = 51,996,249,011.58
  5. Step 5: Solve for x
    x = 51,996,249,011.58/212,721.80
  6. Step 6: Final answer
    x = 244,433.10

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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.