Home / 639,557.46-959,015.28-212,943.02

Finding the Fourth Proportional to 639,557.46, 959,015.28 and 212,943.02

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Solution

The fourth proportional to 639,557.46, 959,015.28 and 212,943.02 is: 319,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,557.46 : 959,015.28 = 212,943.02 : x
  2. Step 2: Convert to fraction form
    639,557.46/959,015.28 = 212,943.02/x
  3. Step 3: Cross multiply
    639,557.46x = 959,015.28 × 212,943.02
  4. Step 4: Simplify right side
    639,557.46x = 204,215,605,154.27
  5. Step 5: Solve for x
    x = 204,215,605,154.27/639,557.46
  6. Step 6: Final answer
    x = 319,307.67

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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.