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Finding the Fourth Proportional to 545,465.22, 818,571.33 and 190,479.30

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Solution

The fourth proportional to 545,465.22, 818,571.33 and 190,479.30 is: 285,849.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,465.22 : 818,571.33 = 190,479.30 : x
  2. Step 2: Convert to fraction form
    545,465.22/818,571.33 = 190,479.30/x
  3. Step 3: Cross multiply
    545,465.22x = 818,571.33 × 190,479.30
  4. Step 4: Simplify right side
    545,465.22x = 155,920,893,938.47
  5. Step 5: Solve for x
    x = 155,920,893,938.47/545,465.22
  6. Step 6: Final answer
    x = 285,849.38

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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.