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Finding the Fourth Proportional to 382,673.12, 528,114.18 and 212,907.64

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Solution

The fourth proportional to 382,673.12, 528,114.18 and 212,907.64 is: 293,826.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,673.12 : 528,114.18 = 212,907.64 : x
  2. Step 2: Convert to fraction form
    382,673.12/528,114.18 = 212,907.64/x
  3. Step 3: Cross multiply
    382,673.12x = 528,114.18 × 212,907.64
  4. Step 4: Simplify right side
    382,673.12x = 112,439,543,714.34
  5. Step 5: Solve for x
    x = 112,439,543,714.34/382,673.12
  6. Step 6: Final answer
    x = 293,826.61

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1.5x scale

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.