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Finding the Fourth Proportional to 351,711.23, 485,360.81 and 190,570.64

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Solution

The fourth proportional to 351,711.23, 485,360.81 and 190,570.64 is: 262,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,711.23 : 485,360.81 = 190,570.64 : x
  2. Step 2: Convert to fraction form
    351,711.23/485,360.81 = 190,570.64/x
  3. Step 3: Cross multiply
    351,711.23x = 485,360.81 × 190,570.64
  4. Step 4: Simplify right side
    351,711.23x = 92,495,516,812.96
  5. Step 5: Solve for x
    x = 92,495,516,812.96/351,711.23
  6. Step 6: Final answer
    x = 262,987.10

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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.