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Finding the Fourth Proportional to 373,718.72, 515,715.72 and 212,551.04

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Solution

The fourth proportional to 373,718.72, 515,715.72 and 212,551.04 is: 293,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,718.72 : 515,715.72 = 212,551.04 : x
  2. Step 2: Convert to fraction form
    373,718.72/515,715.72 = 212,551.04/x
  3. Step 3: Cross multiply
    373,718.72x = 515,715.72 × 212,551.04
  4. Step 4: Simplify right side
    373,718.72x = 109,615,912,630.35
  5. Step 5: Solve for x
    x = 109,615,912,630.35/373,718.72
  6. Step 6: Final answer
    x = 293,311.27

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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.