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Finding the Fourth Proportional to 348,358.59, 522,340.25 and 318,638.07

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Solution

The fourth proportional to 348,358.59, 522,340.25 and 318,638.07 is: 477,776.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,358.59 : 522,340.25 = 318,638.07 : x
  2. Step 2: Convert to fraction form
    348,358.59/522,340.25 = 318,638.07/x
  3. Step 3: Cross multiply
    348,358.59x = 522,340.25 × 318,638.07
  4. Step 4: Simplify right side
    348,358.59x = 166,437,487,550.13
  5. Step 5: Solve for x
    x = 166,437,487,550.13/348,358.59
  6. Step 6: Final answer
    x = 477,776.33

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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.