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Finding the Fourth Proportional to 351,483.75, 485,056.59 and 215,592.78

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Solution

The fourth proportional to 351,483.75, 485,056.59 and 215,592.78 is: 297,523.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,483.75 : 485,056.59 = 215,592.78 : x
  2. Step 2: Convert to fraction form
    351,483.75/485,056.59 = 215,592.78/x
  3. Step 3: Cross multiply
    351,483.75x = 485,056.59 × 215,592.78
  4. Step 4: Simplify right side
    351,483.75x = 104,574,698,695.42
  5. Step 5: Solve for x
    x = 104,574,698,695.42/351,483.75
  6. Step 6: Final answer
    x = 297,523.57

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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.