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Finding the Fourth Proportional to 373,156.64, 514,970.04 and 212,039

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Solution

The fourth proportional to 373,156.64, 514,970.04 and 212,039 is: 292,621.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,156.64 : 514,970.04 = 212,039 : x
  2. Step 2: Convert to fraction form
    373,156.64/514,970.04 = 212,039/x
  3. Step 3: Cross multiply
    373,156.64x = 514,970.04 × 212,039
  4. Step 4: Simplify right side
    373,156.64x = 109,193,732,311.56
  5. Step 5: Solve for x
    x = 109,193,732,311.56/373,156.64
  6. Step 6: Final answer
    x = 292,621.71

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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.