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Finding the Fourth Proportional to 284,615.69, 426,923.12 and 74,253.63

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Solution

The fourth proportional to 284,615.69, 426,923.12 and 74,253.63 is: 111,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,615.69 : 426,923.12 = 74,253.63 : x
  2. Step 2: Convert to fraction form
    284,615.69/426,923.12 = 74,253.63/x
  3. Step 3: Cross multiply
    284,615.69x = 426,923.12 × 74,253.63
  4. Step 4: Simplify right side
    284,615.69x = 31,700,591,019.66
  5. Step 5: Solve for x
    x = 31,700,591,019.66/284,615.69
  6. Step 6: Final answer
    x = 111,380.34

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1.5x scale

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.