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Finding the Fourth Proportional to 373,381.44, 515,280 and 212,263.68

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Solution

The fourth proportional to 373,381.44, 515,280 and 212,263.68 is: 292,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,381.44 : 515,280 = 212,263.68 : x
  2. Step 2: Convert to fraction form
    373,381.44/515,280 = 212,263.68/x
  3. Step 3: Cross multiply
    373,381.44x = 515,280 × 212,263.68
  4. Step 4: Simplify right side
    373,381.44x = 109,375,229,030.40
  5. Step 5: Solve for x
    x = 109,375,229,030.40/373,381.44
  6. Step 6: Final answer
    x = 292,931.62

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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.