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Finding the Fourth Proportional to 308,040.77, 424,614.02 and 283,295.55

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Solution

The fourth proportional to 308,040.77, 424,614.02 and 283,295.55 is: 390,504.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,040.77 : 424,614.02 = 283,295.55 : x
  2. Step 2: Convert to fraction form
    308,040.77/424,614.02 = 283,295.55/x
  3. Step 3: Cross multiply
    308,040.77x = 424,614.02 × 283,295.55
  4. Step 4: Simplify right side
    308,040.77x = 120,291,263,705.52
  5. Step 5: Solve for x
    x = 120,291,263,705.52/308,040.77
  6. Step 6: Final answer
    x = 390,504.36

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1.5x scale

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.