Home / 638,848.76-958,065.72-212,270.02

Finding the Fourth Proportional to 638,848.76, 958,065.72 and 212,270.02

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Solution

The fourth proportional to 638,848.76, 958,065.72 and 212,270.02 is: 318,336.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,848.76 : 958,065.72 = 212,270.02 : x
  2. Step 2: Convert to fraction form
    638,848.76/958,065.72 = 212,270.02/x
  3. Step 3: Cross multiply
    638,848.76x = 958,065.72 × 212,270.02
  4. Step 4: Simplify right side
    638,848.76x = 203,368,629,545.71
  5. Step 5: Solve for x
    x = 203,368,629,545.71/638,848.76
  6. Step 6: Final answer
    x = 318,336.11

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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.