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Finding the Fourth Proportional to 545,751, 753,187.32 and 319,396.68

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Solution

The fourth proportional to 545,751, 753,187.32 and 319,396.68 is: 440,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,751 : 753,187.32 = 319,396.68 : x
  2. Step 2: Convert to fraction form
    545,751/753,187.32 = 319,396.68/x
  3. Step 3: Cross multiply
    545,751x = 753,187.32 × 319,396.68
  4. Step 4: Simplify right side
    545,751x = 240,565,529,426.10
  5. Step 5: Solve for x
    x = 240,565,529,426.10/545,751
  6. Step 6: Final answer
    x = 440,797.23

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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.