Home / 638,962.58-958,084.23-212,270

Finding the Fourth Proportional to 638,962.58, 958,084.23 and 212,270

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Solution

The fourth proportional to 638,962.58, 958,084.23 and 212,270 is: 318,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,962.58 : 958,084.23 = 212,270 : x
  2. Step 2: Convert to fraction form
    638,962.58/958,084.23 = 212,270/x
  3. Step 3: Cross multiply
    638,962.58x = 958,084.23 × 212,270
  4. Step 4: Simplify right side
    638,962.58x = 203,372,539,502.10
  5. Step 5: Solve for x
    x = 203,372,539,502.10/638,962.58
  6. Step 6: Final answer
    x = 318,285.52

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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.