Home / 382,671.12-528,111.42-212,905.64

Finding the Fourth Proportional to 382,671.12, 528,111.42 and 212,905.64

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Solution

The fourth proportional to 382,671.12, 528,111.42 and 212,905.64 is: 293,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,671.12 : 528,111.42 = 212,905.64 : x
  2. Step 2: Convert to fraction form
    382,671.12/528,111.42 = 212,905.64/x
  3. Step 3: Cross multiply
    382,671.12x = 528,111.42 × 212,905.64
  4. Step 4: Simplify right side
    382,671.12x = 112,437,899,866.41
  5. Step 5: Solve for x
    x = 112,437,899,866.41/382,671.12
  6. Step 6: Final answer
    x = 293,823.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.