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Finding the Fourth Proportional to 348,548.60, 522,131.70 and 207,889.40

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Solution

The fourth proportional to 348,548.60, 522,131.70 and 207,889.40 is: 311,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,548.60 : 522,131.70 = 207,889.40 : x
  2. Step 2: Convert to fraction form
    348,548.60/522,131.70 = 207,889.40/x
  3. Step 3: Cross multiply
    348,548.60x = 522,131.70 × 207,889.40
  4. Step 4: Simplify right side
    348,548.60x = 108,545,645,833.98
  5. Step 5: Solve for x
    x = 108,545,645,833.98/348,548.60
  6. Step 6: Final answer
    x = 311,421.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.