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Finding the Fourth Proportional to 369,620.75, 554,435.53 and 145,086.93

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Solution

The fourth proportional to 369,620.75, 554,435.53 and 145,086.93 is: 217,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,620.75 : 554,435.53 = 145,086.93 : x
  2. Step 2: Convert to fraction form
    369,620.75/554,435.53 = 145,086.93/x
  3. Step 3: Cross multiply
    369,620.75x = 554,435.53 × 145,086.93
  4. Step 4: Simplify right side
    369,620.75x = 80,441,348,567.91
  5. Step 5: Solve for x
    x = 80,441,348,567.91/369,620.75
  6. Step 6: Final answer
    x = 217,632.12

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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.