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Finding the Fourth Proportional to 545,312.89, 818,343 and 190,326.95

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Solution

The fourth proportional to 545,312.89, 818,343 and 190,326.95 is: 285,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,312.89 : 818,343 = 190,326.95 : x
  2. Step 2: Convert to fraction form
    545,312.89/818,343 = 190,326.95/x
  3. Step 3: Cross multiply
    545,312.89x = 818,343 × 190,326.95
  4. Step 4: Simplify right side
    545,312.89x = 155,752,726,220.92
  5. Step 5: Solve for x
    x = 155,752,726,220.92/545,312.89
  6. Step 6: Final answer
    x = 285,620.84

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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.